Puppy can poop on training pad. Adults can hold till you get home. Depends on the dog's energy level. I wouldn't walk the dog if the weather is too cold for him/her. I would play with the dog indoors instead. Chihuahuas can bond with owners but they are mean to other people and animals. You can consider bishon, they are very smart, gentle and not that vocal. My medical insurance is close to 20/month. So far I haven't got a chance to use it (mine covers emergency and serious illness, but not covering regular physical check-ups). Depends, little dogs don't eat much. But if you fall in love with them, deciding to buy them a lot of toys and other things......A survey says it cost $1000-1500 for first-year dog owners. I think Bishons are healthy dogs. Just google information for each breed see how healthy they are.