I work from home 4 days a week, so I'd be around and able to spend time with a dog on most days. But the one day a week I go into the office, I'm gone for about 12 hours, sometimes more (if I run errands or go out after work). If I were to get a small dog, and litter box train it, would this be ok for the day I'm gone for so long? Or is a dog just out of the question for my schedule? Also, are there particular breeds that would be more ok with being left alone for a whole day like that, or breeds that I should stay away from?