Whales have "strong social cohesion," meaning they do not leave others of their kind even if it means death.
A house trained bison named Bullet being sold on Craigslist was finally bought last weekend, with the 1,100-pound bison gaining a new home and new friends.
According to the study published in the journal PeerJ, researchers discovered that their findings are consistent with the hypothesis that the structure of sperm whale's forehead evolved to be used as a massive battering ram during male-to-male competition.
The U.S. Geological Survey's National Wildlife Health Center recently verified the white-nose syndrome (WNS) in a little brown bat. The white-nose syndrome is a disease caused by a fungus and has killed millions of bats in North America.
The Hawaiian Islands can say aloha to a new addition to endemic species in the archipelago, after fossil evidence showed another bat species existed in the islands before humans settled in.
Violent, attacking rage in mice could be turned on and off by brain adjustments in a recent study. Researchers say that learning more about brain circuitry regarding aggression in male mice could lend clues later to what drives human actions.
Mammals have evolved much more sensitive hearing than their reptile-like ancestors thanks to three super tiny bones tucked away in the auditory canal. But researchers are still unsure how the mammalian middle ear evolve. Now the University of Queensland (UQ), is shedding some light on the matter, challenging current beliefs and calling for further fossil evidence.
A recent study in Scotland's Hebrides with a large group of wild sheep found that those that were chock-full of Vitamin D by summer's end were more fertile.
When snow finally makes a smooth palette for finding rare gray wolves' pawprints, Washington state biologists find it easiest to track them. The end of the year is the biggest time for measuring the endangered wolves' numbers.
Following the mass extinction of dinosaurs, mammals were able to rapidly diversify and radiate without the threat of predation.
Even tiny birds can live in the Arctic, and very large animals can live near the equator, despite earlier thoughts about which sizes of animals could adjust to cold or heat.
Fossils excavated from the fossil-rich Bighorn Basin in Wyoming shed new light on the different physical and behavioral traits of early carnivorous mammals known as hyaenodontids.
A male's sperm has one job -- to fertilize a female's eggs. So why is sperm from rodents so much longer than that of larger mammals, such as primates, tigers and even whales? Researchers may now have the answer.
Ever wonder how hairy animals keep themselves clean? You may be more familiar with the grooming techniques of household pets, but some animals use "renewable" cleaning strategies researchers hope to apply to keeping technology dust-free.
Members of both animal and human social groups work together to hunt, forage and fight under the guidance of leader. A recent study took a closer look at the nature of leadership to better understand how human and non-human leaders promote cooperative actions.