Fur Keeps Heat in and Cold Water Out
Otters and seals have a two‑layer fur system that prevents water penetration […]
Category: Mammals
Polar Bear special by NHM
The National History Museum in London made a special about polar bears, […]
Otters and seals have a two‑layer fur system that prevents water penetration […]
The National History Museum in London made a special about polar bears, […]