The humans in my house suffer separation anxiety, so my Yorkies have spent very little time alone.

We left Max alone for 1 hour when he was a puppy. Then a few years later, my dad was in the hospital and I left the boys home alone for 1 to 2 hours a couple times a day for a week. They seemed to know it was an emergency and took it very well. I videotaped them and was able to see that they just laid in their beds by the door.