Yes
Air trapped in their fur keeps them warm
The otter is slim and has a tail. He is covered with fur.
Insulation.
An otter's skin is covered in a dense layer of fur that feels soft and plush to the touch. This fur is water-repellent, helping to keep the otter warm and dry while swimming. Beneath the fur, the skin is smooth and somewhat oily, which aids in its waterproofing properties. Overall, touching an otter's fur can feel luxurious and velvety.
Otter
they want money. so they sell the sea otter pelts.
The fur of a sea otter grows so closely together, that it is waterproof. It also traps tiny pockets of air, and the air acts as an insulator, helping to keep the otter from losing heat into the water.
Yes they are
yes
Bleep
I believe the beaver possibly has the most dense fur.
yes they have fur and born out of his mothers wound