Conker is a Shiba Inu, a Japanese breed of dog that was originally bred to hunt, though they are rarely used for that these days. (I do occasionally hunt with mine.) Conker is an asshole, pure and simple. A stuck up, angry, greedy little prick. But he is also a good dog. He helped Flint learn the ins and outs of adventuring in the woods and is a fun guy to have around.

Some more info on Shibas:

http://japandogexport.com/breeds/shiba-ken/