12–15 Weeks: What to Expect From Your Kitten
Your Kitten's Developmental Milestone Checklist
At the age of 13 weeks, your kitten is about halfway to adolescence. She's well-socialized and starting to become self-reliant. Her body and mind are growing at an incredible rate, and this is when you'll see your kitten's second set of major developmental milestones:
Your kitten's beautiful blue eyes are changing color. All kittens are born with blue eyes, and unless your kitten is a Siamese or other oriental breed, at 12 to 13 weeks you'll notice that they're fading to green or gold.
Oh, no! You just found a tiny kitty tooth on the floor! Don't panic. Like humans, a kitten's first set of teeth are replaced by her adult teeth. The first to come in are the incisors (the tiny front teeth) between the ages of 12 and 16 weeks. These are followed by the canine teeth, the premolars, and the molars. Although cats typically swallow their teeth when they fall out, you might occasionally find a tooth on the floor. As long as your cat isn't having trouble eating, everything is probably going as it should. But if you have any doubts, don't be afraid to call the vet and ask. For the curious, cats have 26 baby teeth and 30 adult teeth.
Your kitten's spinal cord and neurological reflexes are at full adult levels now. She pounces, climbs and jumps with more grace and confidence, and she proudly displays her excellent sense of balance by walking on death-defyingly thin surfaces like the tops of doors and tiptoeing elegantly (most of the time) between the fragile knickknacks on your display shelves.