Definitely a little natural armor, especially with their HD. I could also see a bonus to saves vs cold, at least if they're used to living in cold places.
Ok sorry i havent been on folks, Bad Family Issues in a Nuttshll. So +2 natural armor and +2 bonus to save vs cold attacks is good. Anyone wana take a stab at a description block?
This creature resembles a massive human some nine feet tall, with the head of a snarling canine. It clutches a spear in clawed hands, gesturing with evil intent
For the interested I've started putting together a Gamma World Monster list similar to Echohack's D&D monster list. I haven't gotten very far with it yet.