The aging was happening in every unplayed household I had that had a dog. None had been adoptions they were made with the dog included or I moved them in from another household that had more than one pet from the household management screen..
I still want to double check about the puppies because even with mods on it could take along time to happen.I was originally playing a game but time didn't pass quick enough. So I made a vampire and just have them hibernate for a week at a time before I check anything. That's how I saw they were aging, But like I said sometimes puppies and kittens happen and sometimes they don't. I was going to check a bit more to make sure.
