Despite their underwater habitat, whales are mammals. Mammals are not solely terrestrial; some, including whales and dolphins, are fully aquatic the University of Michigan Museum of Zoology reports.

Discover more about the egg-laying monotremes of Oceania and the ancient traits they still carry.

Small mammals are early warning systems for environmental damage, but many species look almost identical, making them hard to track. Scientists have developed a new footprint-based method that can ...

Add Yahoo as a preferred source to see more of our stories on Google. Despite their underwater habitat, whales are mammals. Mammals are not solely terrestrial; some, including whales and dolphins, are ...