For most of the animals on this list, their long hair or fur evolved as a way to cope with the cold. Others were bred to have long hair, and some of these are not even capable of surviving on their own in the wild because of it like the Angora rabbit.
I love otters. I will always love otters, and now I love them more, because they are like little Rowans running around with rocks in their pockets. Fact checked, they do indeed have a pouch in which they keep their favorite rock.