300 million-year-old pre-mammalian reptiles knew that it was their beautiful smiles that made them sexy, so they evolved mouths full of teeth to attract mates.
Burmese pythons appear to be slithering into new territory, extending their range and putting more of South Florida's wildlife at risk of becoming lunch.
Some species of male land-based mammals can vary vocal sounds to exaggerate their body sizes to attract mates.
For more than 20 million years, the ups and downs of diversity in terrestrial large mammals were determined by primary production, i.e. net production of plant biomass. This pattern changed with the onset of the ice ages. ...
Federal authorities took most humpback whales off the endangered species list Tuesday, saying their numbers have recovered through international efforts to protect the giant mammals.
The federal government says a new strategy to address the issue of noise in the ocean will better protect the safety of marine mammals.