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

I agree with Nadiah...wait for the child to be atleast 3 or above or what you can do is get a bit older pet say between 1-5 year old as they are better with young children. They are not prone to rough play as small puppies or kittens and would require less care which is important as your attention will already be on your kid, having a puppy will add more responsibilities.