Hello. I think the caribou are really cute. About the Willow Ptarmigan, where do they normally live? Do they migrate? How do you tell between male and female? I really love Biscuit. I would love to have a dog like that. I wonder how the dog system really works though. It's had me intrigued. How do the dogs become leaders? Also, what do they do with the dogs that aren't fit for sledding? Do people just randomly give you dogs to take care of too?