How do we say "he is big for a baby" in francais?

Translate this to french asap: if i was shopping for a new pet, i would want a dog. to take care of a dog, i will need to feed it, bathe it, and play with it. i will also take it on walks everyday. to take care of it, i would need a leash and collar, dog toys, food bowls, and more. i already have a dog, but i would also like another one. no google translate