Mustelids Otters

• Sea

• The Mammal Society: The Otter (Lutra lutra)  - Addresses recognition, general ecology, frequent questions, threats, and conservation efforts.
• Mammals of Kansas: River Otter (Lontra canadensis)  - Article includes photograph, tracks, physical characteristics, range and habitat history, breeding and growth, activity, dens, food, defenses, interaction with humans, and lifespan.
• Otternet.com  - Provides fun, facts, faces, species, habitat, news, contests, and kids' page.
• River Otter  - Tells about size, coloring, personality, range, habitat, diet, life-cycle, and contribution to the environment. From DesertUSA.com.
• River Otter (Lontra canadensis)  - Defenders of Wildlife gives range, appearance, diet, population, range, behavior, threats, and status.
• The River Otter (Lutra canadensis)  - Covers habitat, names, history, behavior, appearance, food, and family life.