Ive seen hogs hunted with many breeds of dog but it doesnt mean that they are hog hunting breeds. All the hawaiians i chat with online use airedale, greyhound, bull terrier, pit bull and german short hair pointers. Any of the above breeds are crossed never have i heard of chihuahas (not saying it didnt happen). I had a 10 pound patterdale terrier that would grab ahold of a hog but by no means could it be called catching.