SOLVED. Two childrens books but basically the same. One about Cats, one about Dogs. Animal has babies, they grow up and have families. [s]

[Tesh]

were there pictures or photographs?
Do you remember what the covers looked like - were they in the same series?

[Ayshe]

Courtney, did you find them? Are they
Whatever Happens To Kittens (I noticed that it is linked to the topic) and Whatever Happens to Puppies? by Bill Hall?

[Kris]

Glad you found your book, Courtney.

I added plot details to the topic header. This might help others looking for these books in the future.