I know a lot of people may feel that 12 weeks seems a bit old to adopt a kitten. Especially when you can look at so many ads listing kittens for sale at 6-8 weeks. I have done a lot of research in regards to the "appropriate" age to allow a kitten to leave for their forever home. Health being my top priority, it simply came down to what was best for the health of the kitten. Between 8-12 weeks, the immunity that the kitten receives while nursing from its mother is wearing off due to being weaned. The kitten will receive its first vaccination between 8-9 weeks. The immunity from that first vaccination can take up to 10 days to become effective. Therefore, during this time the kitten will be more susceptible to illness. Not to mention that there are crucial mental, emotional and developmental milestones that a kitten will experience between 6-12 weeks of age. These milestones will help to make a better cat and in turn make the kitten experience a more enjoyable one for all.
Properly handled and socialized by people, these kittens have learned to explore their world and will meet it with a happy, outgoing confidence that will carry them throughout their lifetime. You will have a healthier, happier, and better socialized feline friend because of it.