The sea otter’s grooming regimen will be familiar to anyone with a cat. Like cats, sea otters spend considerable time licking ...

Unlike most marine mammals, sea otters are primarily insulated by fur, not blubber. In fact they have the densest fur in the animal kingdom. Sadly that thick, resplendent coat has also given otters ...

Once, sea otters were hunted nearly to extinction due to their thick fur coats, which were prized for their dense, water-resistant properties. Populations in several states were completely ...

Otters’ lustrous fur—the thickest on the planet—keeps them alive in frigid ... per square inch (compared with about 1,000 hairs on top of your head). That thick coat proved too tempting to hundreds of ...

Like many mammals, otters have two layers of fur. They have a short, soft, dense undercoat and long, coarse hairs that make up the outer coat. This layered fur allows the otters to slide on snow ...

and it starts with a roll in the snow to keep its fur coat insulated. The waters in the Upper Peninsula of Michigan freeze over fast in winter–and river otters need to work just as fast to keep ...