zooarchanthropy

Stick to Anthro--there are a lot of us interested in human-animal relationships. Having two people in your department with immediately relevant interests is more than a lot of people get. Think about recruiting an outside committee member, perhaps from Canada or Europe, if you don't want to go to them. There's some interesting work done by zooarchaeologists recently--I'd look at Russell and Sykes, in particular for discussions of companion animals in the past and human-animal relationships in general.