I don't think anyone will be able to answer that, there aren't really any clues presented either way.
However, i don't think Burrich would hate the Wit so much if he had recently practiced it, and dogs don't really live *that* long. Bitches will only birth between what, two and 15 years of age? Also, it seems like if you wit bond with an animal, you can't keep the animal but sever the bond.
ranwulf - have you read the Tawny Man trillogy?
if you have say so and I will continue, but I have a strong feeling that you have yet to read this continuation (if you have try and read the Liveships trillogy first - opens some large plot devices and helps build the world up)