Help please !
Over the last few months, Basil (3.5 years, not castrated) has started barking at any male visitors to the house that he doesn't know. He will go to greet them and when they put a hand out or lean to say hello, he barks in a bit of an intimidating way. We have started either putting him in the other room when people call or holding him close. Last night someone called quite late to collect my daughter's friend. Basil was being held by my son and when the visitor put a hand out