North American River Otter
![North American River Otter](https://uploads.alaska.org/suppliers/activities/A/alaska-zoo/audio-guide/harbor-seal-river-otter/_960xAUTO_fit_center-center_65_none/Seal-Otter-IMG_80902019.jpg)
River Otters are semi-aquatic and reach weights of 11-30 lbs. They typically hunt fish and moluscs but have also been known to eat small mammals. They are especially susceptible to pollution and encroachment from development so seeing them is a marker of a watersheds health.