Otter
- Contains information about sea otters. Information includes habitat, diet, and physical description.
- http://www.bristolzoo.org.uk/learning/animals/mammals/otter

Nature: Yellowstone Otters
- Contains information about the river otter in the park.
- http://www.pbs.org/wnet/nature/otters/

Otters
- Contains background information, current threats, and what the World Wildlife Fund is doing.
- http://www.wwf.org.uk/core/wildlife/fs_0000000027.asp

Wikipedia: Otter
- Encyclopedia article looks at the different species of otters.
- http://en.wikipedia.org/wiki/Otter

Wild Woods Otter
- Contains information on the lifestyle and identification of this animal.
- http://www.forestry.gov.uk/forestry/Otter

WildCam Otters
- Indoor and outdoor views of otters in action, from National Geographic.
- http://www.nationalgeographic.com/ottercam/

North American River Otter
- Learn about the range, habitat, diet, and life cycle of these amazing otters.
- http://animaldiversity.ummz.umich.edu/site/accounts/information/Lontra_canadensis.html

Sea Otter
- Includes information about the life span, habitat, size, and diet of the sea otter.
- http://www.kidsplanet.org/factsheets/otter.html