Definition that contains webbed
- beaver large semiaquatic rodent with webbed hind feet and a broad flat tail; construct complex dams and underwater lodges
- penguin short-legged flightless birds of cold southern especially Antarctic regions having webbed feet and wings modified as flippers
- diver large somewhat primitive fish-eating diving bird of the northern hemisphere having webbed feet placed far back; related to the grebes
- mink slender-bodied semiaquatic mammal having partially webbed feet; valued for its fur
- otter freshwater carnivorous mammal having webbed and clawed feet and dark brown fur
- dipper small stocky diving bird without webbed feet; frequents fast-flowing streams and feeds along the bottom
- platypus small densely furred aquatic monotreme of Australia and Tasmania having a broad bill and tail and webbed feet; only species in the family Ornithorhynchidae
- loon large somewhat primitive fish-eating diving bird of the northern hemisphere having webbed feet placed far back; related to the grebes
- duckbill small densely furred aquatic monotreme of Australia and Tasmania having a broad bill and tail and webbed feet; only species in the family Ornithorhynchidae
- capybara pig-sized tailless South American amphibious rodent with partly webbed feet; largest living rodent