I stumbled across two of these things tearing apart a zombie. Not even live flesh, and these things were having a feast. I'd say these could be man's new best friend, but they left the walking corpse alone as soon as they saw me. I unloaded a few shotgun rounds into them both. This one wasn't too badly damaged, so I managed to get a decent pic. They appear to be dogs with beaks. Some sort of cross breeding experiment gone wrong gone zombie or something. Maybe PETA was right, but I won't get into that now.
If we can tame these fucking things, we might have a chance.