Crosley only goes outside, she is a 17lb Yorkie-Poo!
Wrigley we brought home as a 3 month old puppy who was almost completely pee pee pad trained. We bought her in the fall and she was so small going into winter and it was easier. She is much more of an indoor dog and she gets cold so easily! She will go outside, but prefers indoor!
Camden was 2years old when we rescued her and I think she was used to going wherever! She LOVES being outdoors and would prefer it, but she will use pads as well and is actually getting better about it lately!
I would say weather is the big thing for us, when it's raining and cold, we just hate going out and they do too!
We just prefer having the option and I'm glad that the smaller two will use both!