![All fur no blubber. Sea otters have the densest fur in the animal kingdom, ranging from 250,000 to a million hairs per square inch, which insulates them and maintains warmth. Unlike other All fur no blubber. Sea otters have the densest fur in the animal kingdom, ranging from 250,000 to a million hairs per square inch, which insulates them and maintains warmth. Unlike other](https://c8.alamy.com/comp/MA60WG/all-fur-no-blubber-sea-otters-have-the-densest-fur-in-the-animal-kingdom-ranging-from-250000-to-a-million-hairs-per-square-inch-which-insulates-them-and-maintains-warmth-unlike-other-marine-mammals-the-sea-otter-does-not-have-a-layer-of-blubber-fat-to-help-keep-it-warm-MA60WG.jpg)
All fur no blubber. Sea otters have the densest fur in the animal kingdom, ranging from 250,000 to a million hairs per square inch, which insulates them and maintains warmth. Unlike other
![10 facts you might not know about the adorable otter | by Taronga Conservation Society Australia | For the Wild | Medium 10 facts you might not know about the adorable otter | by Taronga Conservation Society Australia | For the Wild | Medium](https://miro.medium.com/max/1200/1*ir3MBJgZwPKAVghEbSdFIg.jpeg)
10 facts you might not know about the adorable otter | by Taronga Conservation Society Australia | For the Wild | Medium
![Otters have 850,000 to one million hairs per square inch, making it the thickest fur of any mammal. : r/Awwducational Otters have 850,000 to one million hairs per square inch, making it the thickest fur of any mammal. : r/Awwducational](https://i.redd.it/oj2ydfbvxxux.jpg)
Otters have 850,000 to one million hairs per square inch, making it the thickest fur of any mammal. : r/Awwducational
![Cincinnati Zoo on Twitter: "Silly Sugar! River otters' special two-layered fur coat allows them to keep warm. A river otter has 450,000 hairs per square inch which sounds like a lot but Cincinnati Zoo on Twitter: "Silly Sugar! River otters' special two-layered fur coat allows them to keep warm. A river otter has 450,000 hairs per square inch which sounds like a lot but](https://pbs.twimg.com/media/DuEFj48WsAAYwsT.jpg)