Why did my dog start howling while alone?
I have a six year old poodle/Bolonese mix. We have left him during the day for years. We took a vacation for a week and my daughter watched him in our house. She would leave for work during the day, otherwise was home with him. About half way through our trip, he started howling while he was home alone, which to our knowledge he hasn't done before. Any thoughts on why he would start doing this?