They can use them taste, grab, and smell things. 

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Mink are sorta aquatic and can be found along rivers across America

Grizzly bear sitting

The Grizzly Bear

Tobogganing penguin

Tobogganing is when penguins slide on their bellies to move faster across ice without falling

Sea Otters are a keystone species

Image of a golden lion tamarin

Golden Lion Tamarins Were Almost Extinct But Populations Are Recovering Due To Conservation Efforts in Disease Control and Reforestation

Leaf-sheep slugs have the face of a sheep, a body of a leaf, and can photosynthesize