New Dogs + Dogsleds

Hello, 

I think that because you can tame an ocelot and it turns to a cat, we should have dogs do that as well. There can be multiple breeds like the Husky, Shiba Inu, and Swedish Vallhund, and each breed has a perk such as a sled dog, which can pull the new item dogsled, or hunting dogs, which hunt for small game and return it to you, or a shepherd dog which keeps sheep and cows in an area set my four or more barrier post blocks which, when when four are put in the corners of a large area, the doggos will keep animals inside this area.