What's the best age for child to have a pet?

It really depends on your child's temperament. I've seen babies grow up with their puppies and kittens and they got along just fine. I've also seen older kids who are just not interested in caring for a pet. While pets can be fun, it is a lot of responsibility and not a toy. Kids and parents need to understand this really well before getting a pet. Seen too many cases of abandonment because families claim that the cat or dog is not cute anymore or not fun anymore.