{"id":10412,"date":"2025-10-07T13:20:58","date_gmt":"2025-10-07T18:20:58","guid":{"rendered":"https:\/\/www.petworks.com\/articles\/?p=10412"},"modified":"2025-10-07T13:21:28","modified_gmt":"2025-10-07T18:21:28","slug":"how-old-is-my-kitten","status":"publish","type":"post","link":"https:\/\/www.petworks.com\/articles\/how-old-is-my-kitten\/","title":{"rendered":"How Old Is My Kitten?"},"content":{"rendered":"<p>How Old Is My Kitten? A Petworks Guide to Determining Your Feline Friend&#8217;s Age. Bringing a new kitten into your home is a joyous occasion, filled with tiny paws, playful antics, and endless cuddles. However, if you&#8217;ve adopted a stray or rescued a kitten without knowing its history, a common question arises: How old is my kitten?<span class=\"citation-0 recitation citation-end-0\"> Determining a kitten&#8217;s age is so important for providing appropriate care, including nutrition, vaccinations, and socialization. <\/span>This post will guide you through the various methods you can use to estimate your kitten&#8217;s age, ensuring you can provide the best possible start in life.<\/p>\n<p><!--more--><\/p>\n<h3 data-sourcepos=\"5:1-5:41\"><strong><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-7515 size-full\" src=\"https:\/\/www.petworks.com\/articles\/wp-content\/uploads\/2025\/01\/Petworks-Pet-Care-Service-Pro-Tips-e1736622469982.png\" alt=\"How Old Is My Kitten\" width=\"120\" height=\"120\" \/>Why Knowing Your Kitten&#8217;s Age Matters<\/strong><\/h3>\n<p data-sourcepos=\"7:1-7:46\">Understanding your kitten&#8217;s age allows you to:<\/p>\n<ul data-sourcepos=\"9:1-13:0\">\n<li data-sourcepos=\"9:1-9:194\"><strong><span class=\"citation-1 recitation\">Provide appropriate nutrition:<\/span><\/strong><span class=\"citation-1 recitation citation-end-1\"> Kittens have specific nutritional needs that change as they grow.<\/span> Knowing their age helps you choose the right kitten food and feeding schedule.<span class=\"button-container hide-from-message-actions ng-star-inserted\">\u00a0 \u00a0<\/span><\/li>\n<li data-sourcepos=\"10:1-10:150\"><strong>Schedule vaccinations and deworming:<\/strong> Veterinarians follow age-based vaccination and deworming protocols to protect kittens from common diseases.<\/li>\n<li data-sourcepos=\"11:1-11:200\"><strong><span class=\"citation-2 recitation\">Facilitate proper socialization:<\/span><\/strong><span class=\"citation-2 recitation citation-end-2\"> Early socialization is vital for a kitten&#8217;s development.<\/span> <span class=\"citation-3 recitation citation-end-3\">Age-appropriate interactions help them become well-adjusted and friendly cats.<\/span><span class=\"button-container hide-from-message-actions ng-star-inserted\">\u00a0<\/span><\/li>\n<li data-sourcepos=\"12:1-13:0\"><strong><span class=\"citation-4 recitation\">Understand developmental milestones:<\/span><\/strong><span class=\"citation-4 recitation citation-end-4\"> Knowing your kitten&#8217;s age allows you to track their developmental progress and identify any potential issues early on.<\/span><span class=\"button-container hide-from-message-actions ng-star-inserted\">\u00a0 \u00a0<\/span>\n<div class=\"container ng-tns-c3928559184-21 hide\">\n<div class=\"carousel-container ng-tns-c3928559184-21\">\n<div class=\"carousel-content ng-tns-c3928559184-21\">\n<div class=\"sources-carousel-source ng-tns-c3928559184-21 hide ng-star-inserted\" data-test-id=\"sources-carousel-source\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/li>\n<\/ul>\n<h3 data-sourcepos=\"14:1-14:44\"><strong>Methods for Estimating Your Kitten&#8217;s Age<\/strong><\/h3>\n<p data-sourcepos=\"16:1-16:67\">Here are several methods you can use to estimate your kitten&#8217;s age:<\/p>\n<h4 data-sourcepos=\"18:1-18:42\"><strong>1. Observing Physical Characteristics:<\/strong><\/h4>\n<ul data-sourcepos=\"20:1-38:0\">\n<li data-sourcepos=\"20:1-20:123\"><strong>Umbilical Cord:<\/strong> Newborn kittens have a visible umbilical cord stump. It typically falls off within 2-3 days of birth.<\/li>\n<li data-sourcepos=\"21:1-24:100\"><strong>Eyes:<\/strong>\n<ul data-sourcepos=\"22:5-24:100\">\n<li data-sourcepos=\"22:5-22:93\"><span class=\"citation-5 recitation citation-end-5\">Newborn kittens&#8217; eyes are closed.<\/span> They begin to open around 7-10 days old.<span class=\"button-container hide-from-message-actions ng-star-inserted\">\u00a0 \u00a0<\/span><\/li>\n<li data-sourcepos=\"23:5-23:97\">By 2-3 weeks, their eyes are fully open, but their pupils may still appear somewhat cloudy.<\/li>\n<li data-sourcepos=\"24:5-24:100\"><span class=\"citation-6 recitation citation-end-6\">At 6-7 weeks, their eye color may start to change to their permanent adult color.<\/span><span class=\"button-container hide-from-message-actions ng-star-inserted\">\u00a0 \u00a0<\/span>\n<div class=\"container ng-tns-c3928559184-23 hide\">\n<div class=\"carousel-container ng-tns-c3928559184-23\">\n<div class=\"carousel-content ng-tns-c3928559184-23\">\n<div class=\"sources-carousel-source ng-tns-c3928559184-23 hide ng-star-inserted\" data-test-id=\"sources-carousel-source\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/li>\n<\/ul>\n<\/li>\n<li data-sourcepos=\"25:1-27:62\"><strong>Ears:<\/strong>\n<ul data-sourcepos=\"26:5-27:62\">\n<li data-sourcepos=\"26:5-26:53\">Newborn kittens&#8217; ears are folded down and flat.<\/li>\n<li data-sourcepos=\"27:5-27:62\">They begin to unfold and stand erect around 3 weeks old.<\/li>\n<\/ul>\n<\/li>\n<li data-sourcepos=\"25:1-27:62\"><strong>Teeth:<\/strong>\n<ul data-sourcepos=\"29:5-34:72\">\n<li data-sourcepos=\"29:5-29:50\"><span class=\"citation-7 recitation citation-end-7\">Kittens are born without teeth.<\/span><span class=\"button-container hide-from-message-actions ng-star-inserted\"> \u00a0<\/span>\n<div class=\"container ng-tns-c3928559184-24 hide\">\n<div class=\"carousel-container ng-tns-c3928559184-24\"><\/div>\n<\/div>\n<p><span class=\"citation-8 recitation citation-end-8\">Deciduous (baby) teeth start to erupt around 2-4 weeks of age.<\/span><span class=\"button-container hide-from-message-actions ng-star-inserted\"> \u00a0<\/span><\/p>\n<p><span style=\"text-decoration: underline;\"><a href=\"https:\/\/www.petmd.com\/cat\/general-health\/kitten-teething-guide\">Incisors appear first<\/a><\/span>, followed by canines and premolars.<\/li>\n<li data-sourcepos=\"30:5-30:81\"><span class=\"citation-9 recitation citation-end-9\">By 8 weeks, most kittens have a full set of baby teeth.<\/span><\/li>\n<li data-sourcepos=\"30:5-30:81\"><span class=\"citation-10 recitation citation-end-10\">Permanent teeth begin to replace baby teeth around 3-4 months of age.<\/span><span class=\"button-container hide-from-message-actions ng-star-inserted\">\u00a0 \u00a0<\/span><\/li>\n<li data-sourcepos=\"34:5-34:72\"><span class=\"citation-11 recitation citation-end-11\">By 6 months, most kittens have their permanent teeth.<\/span><span class=\"button-container hide-from-message-actions ng-star-inserted\"> \u00a0<\/span>\n<div class=\"container ng-tns-c3928559184-28 hide\">\n<div class=\"carousel-container ng-tns-c3928559184-28\">\n<div class=\"carousel-content ng-tns-c3928559184-28\">\n<div class=\"sources-carousel-source ng-tns-c3928559184-28 hide ng-star-inserted\" data-test-id=\"sources-carousel-source\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/li>\n<\/ul>\n<\/li>\n<li data-sourcepos=\"35:1-38:0\"><strong>Fur:<\/strong>\n<ul data-sourcepos=\"36:5-38:0\">\n<li data-sourcepos=\"36:5-36:61\"><span class=\"citation-12 recitation citation-end-12\">Very young kittens have soft, downy fur.<\/span>\n<div class=\"container ng-tns-c3928559184-29 hide\">\n<div class=\"carousel-container ng-tns-c3928559184-29\"><\/div>\n<\/div>\n<p>As they grow, their fur becomes thicker and more defined.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4 data-sourcepos=\"39:1-39:42\"><strong>2. Assessing Developmental Milestones:<\/strong><\/h4>\n<ul data-sourcepos=\"41:1-53:0\">\n<li data-sourcepos=\"41:1-44:83\"><strong>Mobility:<\/strong>\n<ul data-sourcepos=\"42:5-44:83\">\n<li data-sourcepos=\"42:5-42:48\">Newborn kittens can only wiggle and crawl.<\/li>\n<li data-sourcepos=\"43:5-43:73\"><span class=\"citation-13 recitation citation-end-13\">They start to walk and explore around 3-4 weeks old.<\/span><span class=\"button-container hide-from-message-actions ng-star-inserted\">\u00a0 \u00a0<\/span><\/li>\n<li data-sourcepos=\"44:5-44:83\"><span class=\"citation-14 recitation citation-end-14\">By 6-8 weeks, they are running, jumping, and playing actively.<\/span><span class=\"button-container hide-from-message-actions ng-star-inserted\">\u00a0 \u00a0<\/span>\n<div class=\"container ng-tns-c3928559184-31 hide\">\n<div class=\"carousel-container ng-tns-c3928559184-31\">\n<div class=\"carousel-content ng-tns-c3928559184-31\">\n<div class=\"sources-carousel-source ng-tns-c3928559184-31 hide ng-star-inserted\" data-test-id=\"sources-carousel-source\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/li>\n<\/ul>\n<\/li>\n<li data-sourcepos=\"45:1-48:80\"><strong>Socialization:<\/strong>\n<ul data-sourcepos=\"46:5-48:80\">\n<li data-sourcepos=\"46:5-46:99\"><span class=\"citation-15 recitation citation-end-15\">Kittens begin to interact with their mother and siblings around 3-4 weeks old.<\/span><span class=\"button-container hide-from-message-actions ng-star-inserted\">\u00a0 \u00a0<\/span><\/li>\n<li data-sourcepos=\"47:5-47:95\">They start to play and explore their environment more independently around 6-8 weeks old.<\/li>\n<li data-sourcepos=\"48:5-48:80\">Socialization with humans is very important between 3 and 16 weeks of age.<\/li>\n<\/ul>\n<\/li>\n<li data-sourcepos=\"49:1-53:0\"><strong>Weight:<\/strong>\n<ul data-sourcepos=\"50:5-53:0\">\n<li data-sourcepos=\"50:5-50:98\">While weight can vary depending on breed and genetics, it can be a general indicator of age.<\/li>\n<li data-sourcepos=\"51:5-51:87\">A healthy kitten typically gains about 1\/2 ounce per day for the first few weeks.<\/li>\n<li data-sourcepos=\"52:5-53:0\">Consulting with a veterinarian is the best method to check for healthy weight gain.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4 data-sourcepos=\"54:1-54:38\"><strong>3. Utilizing Veterinary Expertise:<\/strong><\/h4>\n<ul data-sourcepos=\"56:1-59:0\">\n<li data-sourcepos=\"56:1-56:94\"><span class=\"citation-16 recitation citation-end-16\">A veterinarian is the most reliable source for determining your kitten&#8217;s age.<\/span><\/li>\n<li data-sourcepos=\"56:1-56:94\"><span class=\"citation-17 recitation citation-end-17\">They can perform a thorough physical examination, assess dental development, and consider other factors to provide an accurate estimate.<\/span><span class=\"button-container hide-from-message-actions ng-star-inserted\">\u00a0 \u00a0<\/span><\/li>\n<li data-sourcepos=\"56:1-56:94\">Veterinarians can also provide valuable information about kitten care, <span style=\"text-decoration: underline;\"><a href=\"https:\/\/www.petworks.com\/hire\/cat-nutritionist\">cat nutrition<\/a><\/span>, and health.\n<div class=\"carousel-container ng-tns-c3928559184-35\"><\/div>\n<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-6834 size-full\" src=\"https:\/\/www.petworks.com\/articles\/wp-content\/uploads\/2024\/12\/petworks-logo-article-e1734545691243.png\" alt=\"How Old Is My Kitten\" width=\"704\" height=\"131\" srcset=\"https:\/\/www.petworks.com\/articles\/wp-content\/uploads\/2024\/12\/petworks-logo-article-e1734545691243.png 704w, https:\/\/www.petworks.com\/articles\/wp-content\/uploads\/2024\/12\/petworks-logo-article-e1734545691243-300x56.png 300w, https:\/\/www.petworks.com\/articles\/wp-content\/uploads\/2024\/12\/petworks-logo-article-e1734545691243-640x119.png 640w\" sizes=\"auto, (max-width: 704px) 100vw, 704px\" \/><\/p>\n<p data-pm-slice=\"1 3 []\"><span style=\"color: #000080;\"><em><strong>Are you finding this article useful?<\/strong> <\/em>Would you like 100% free access to more articles like these, and free access to <span style=\"text-decoration: underline;\"><a style=\"color: #000080; text-decoration: underline;\" href=\"https:\/\/www.petworks.com\/request_quote\">over 5,000 vetted pet care service professionals<\/a><\/span> throughout the United States? <span style=\"text-decoration: underline;\"><a style=\"color: #000080; text-decoration: underline;\" href=\"https:\/\/www.petworks.com\/join\">Sign up here <\/a><\/span>for a free Petworks account, and we&#8217;ll email you a\u00a0 10% discount code, good towards your first pet care services booking on Petworks!<\/span><\/p>\n<h4 data-sourcepos=\"60:1-60:46\"><strong>4. Petworks Platform for Cat Care Support:<\/strong><\/h4>\n<p data-sourcepos=\"62:1-62:196\">For cat parents seeking professional guidance and support, platforms like Petworks offer a valuable resource. Petworks connects pet owners with qualified pet care professionals, including:<\/p>\n<ul data-sourcepos=\"64:1-67:0\">\n<li data-sourcepos=\"64:1-64:140\"><strong>Cat Nutrition Consultants:<\/strong> They can provide personalized dietary recommendations based on your kitten&#8217;s age, breed, and health status.<\/li>\n<li data-sourcepos=\"65:1-65:130\"><strong><span class=\"citation-19 recitation\">Cat Behaviorists:<\/span><\/strong><span class=\"citation-19 recitation citation-end-19\"> They can help address behavioral issues and provide guidance on socialization and training.<\/span><span class=\"button-container hide-from-message-actions ng-star-inserted\">\u00a0 \u00a0<\/span><\/li>\n<li data-sourcepos=\"66:1-67:0\"><strong>Veterinary Consultations:<\/strong> <span class=\"citation-20 recitation citation-end-20\">Some platforms offer virtual consultations with veterinarians, allowing you to get expert advice from the comfort of your home.<\/span><span class=\"button-container hide-from-message-actions ng-star-inserted\">\u00a0 \u00a0<\/span>\n<div class=\"container ng-tns-c3928559184-37 hide\">\n<div class=\"carousel-container ng-tns-c3928559184-37\">\n<div class=\"carousel-content ng-tns-c3928559184-37\">\n<div class=\"sources-carousel-source ng-tns-c3928559184-37 hide ng-star-inserted\" data-test-id=\"sources-carousel-source\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/li>\n<\/ul>\n<p data-sourcepos=\"68:1-68:141\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-7032 size-full\" src=\"https:\/\/www.petworks.com\/articles\/wp-content\/uploads\/2025\/01\/Petworks-Pet-Care-Hedgehog.png\" alt=\"How Old Is My Kitten\" width=\"108\" height=\"69\" \/>By utilizing the services available on Petworks, you can ensure your kitten receives the best possible care throughout their development.<\/p>\n<p>&#8220;The weight-to-age ratio is one of the quickest, most practical tools we have in the shelter. A one-pound kitten is roughly one month old. It\u2019s a reliable guide for the first four to five months of life.&#8221; &#8211; <span style=\"text-decoration: underline;\"><a href=\"https:\/\/www.linkedin.com\/in\/jenniferconraddvm\/\"><b>Dr. Jennifer Conrad, DVM<\/b><\/a><\/span><\/p>\n<p data-sourcepos=\"72:1-72:564\">When pet parents wonder, \u201cHow old is my kitten?\u201d veterinarians often rely on physical and behavioral markers to estimate age. <span style=\"text-decoration: underline;\"><a href=\"https:\/\/www.petmd.com\/author\/dr-hannah-hart\"><strong data-start=\"205\" data-end=\"225\">Hannah Hart, DVM<\/strong><\/a><\/span>, explains in <em data-start=\"239\" data-end=\"246\">PetMD<\/em> that examining teeth is one of the most reliable methods, since kittens develop their baby teeth at around two to three weeks of age, and permanent teeth begin replacing them by three to four months. Other signs such as eye color changes, body size, weight gain, and coat development also help determine approximate age. While these indicators can provide a good estimate, Dr. Hart emphasizes that every kitten develops at a slightly different pace, so consulting a veterinarian remains the best way to get the most accurate assessment.<\/p>\n<h3 data-sourcepos=\"72:1-72:564\"><strong>So&#8230;How Old Is My Kitten?<\/strong><\/h3>\n<p data-sourcepos=\"72:1-72:564\">Determining how old is my kitten is a big step in providing appropriate care. By observing physical characteristics, assessing developmental milestones, and consulting with a veterinarian, you can gain a reliable estimate of your kitten&#8217;s age. Utilizing platforms like Petworks can further enhance your kitten care journey by connecting you with experienced professionals who can provide expert guidance and support. Remember, early intervention and proper care are essential for ensuring your kitten grows into a healthy, happy, and well-adjusted cat.<\/p>\n<!--[if lt IE 9]><script>document.createElement('audio');<\/script><![endif]-->\n<audio class=\"wp-audio-shortcode\" id=\"audio-10412-1\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/www.petworks.com\/articles\/wp-content\/uploads\/2024\/09\/169-Old-Redding-Rd-22.m4a?_=1\" \/><a href=\"https:\/\/www.petworks.com\/articles\/wp-content\/uploads\/2024\/09\/169-Old-Redding-Rd-22.m4a\">https:\/\/www.petworks.com\/articles\/wp-content\/uploads\/2024\/09\/169-Old-Redding-Rd-22.m4a<\/a><\/audio>\n<h3 data-start=\"7576\" data-end=\"7805\"><span style=\"text-decoration: underline;\"><a href=\"https:\/\/www.petworks.com\/infos\/about\">About Petworks<\/a><\/span><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-7722\" src=\"https:\/\/www.petworks.com\/articles\/wp-content\/uploads\/2025\/01\/Dr-Marty-Goldstein-Natures-Blend-Petworks-Nutrition.png\" alt=\"Dr Marty Goldstein Nature's Blend - Petworks Nutrition\" width=\"111\" height=\"109\" \/>In 2021, Dr. <span style=\"text-decoration: underline;\"><a style=\"text-decoration: underline;\" href=\"https:\/\/www.petworks.com\/articles\/dr-marty-goldstein-of-petworks\/\">Marty Goldstein DVM<\/a><\/span> joined the pet care platform Petworks as an advisor in its <span style=\"text-decoration: underline;\"><a style=\"text-decoration: underline;\" href=\"https:\/\/www.petworks.com\/hire\/animal-nutritionist\">Animal Nutrition<\/a><\/span>\u00a0care division. Dr Marty Nature&#8217;s Blend is\u00a0on a mission to help your pets live their healthiest lives possible.\u00a0Dr. Marty\u2019s pet nutrition expertise and guidance has helped Petworks evolve and become the preeminent animal and pet nutrition consultation service for pet\u00a0parents in North America.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-8658\" src=\"https:\/\/www.petworks.com\/articles\/wp-content\/uploads\/2025\/01\/William-Bishop-Jr-Petworks-Pet-Nutrition.png\" alt=\"Bill Bishop Blue Buffalo Pet Nutrition\" width=\"96\" height=\"99\" \/>In 2022, <span style=\"text-decoration: underline;\"><a style=\"text-decoration: underline;\" href=\"https:\/\/www.petworks.com\/articles\/blue-buffalo-dog-food\/\">Blue Buffalo<\/a><\/span> Founder Bill Bishop Jr. joined Petworks as Senior Advisor in our Animal Nutrition Care Division. Bill brings his extensive expertise in pet food innovation and business leadership. His guidance helps Petworks enhance our pet nutrition service offerings, helping to ensure that pet parents throughout the world receive trusted, science-backed nutritional support for their dogs, cats, and animals.<\/p>\n<div class=\"markdown prose w-full break-words dark:prose-invert light\">\n<p><span style=\"text-decoration: underline;\">About The Author<\/span><\/p>\n<div class=\"markdown prose w-full break-words dark:prose-invert light\">\n<p><a href=\"https:\/\/www.petworks.com\/\"><span style=\"text-decoration: underline;\"><em><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-10642\" src=\"https:\/\/www.petworks.com\/articles\/wp-content\/uploads\/2025\/02\/Kevin-Kinyon-2025.jpeg\" alt=\"\" width=\"91\" height=\"108\" \/><\/em>Petworks<\/span><\/a> Co-Founder <a href=\"https:\/\/www.linkedin.com\/in\/kinyonkevin\/\"><span style=\"text-decoration: underline;\">Kevin Kinyon<\/span><\/a> is a life-long animal lover who works tirelessly to improve the lives of pets and their parents. Human and animal qualities he values most are integrity, humor, and empathy.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>How Old Is My Kitten? A Petworks Guide to Determining Your Feline Friend&#8217;s Age. Bringing a new kitten into your home is a joyous occasion, filled with tiny paws, playful antics, and endless cuddles. However, if you&#8217;ve adopted a stray or rescued a kitten without knowing its history, a common question arises: How old is &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.petworks.com\/articles\/how-old-is-my-kitten\/\" class=\"more-link\">Read More<span class=\"screen-reader-text\"> &#8220;How Old Is My Kitten?&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":10423,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false},"version":2}},"categories":[123],"tags":[],"class_list":["post-10412","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cat-nutrition-advice"],"jetpack_publicize_connections":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.3.1 (Yoast SEO v25.3.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How Old Is My Kitten?<\/title>\n<meta name=\"description\" content=\"if you&#039;ve adopted a stray or rescued a kitten without knowing its history, a common question arises: How old is my kitten? 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