If you’ve ever spent time around horses—or perhaps even if you haven’t—you may have heard a strange but true fact: horses can ...

Defecation is commonly treated as a universal feature of animal life, a visible outcome of digestion and metabolic turnover. In biological terms, however, waste handling takes multiple forms, shaped ...

“These types of immune responses are involved in many more functions in humans and mammals than just torturing us with allergies,” said Steven Van Dyken, an immunologist at Washington University and ...

A young male sperm whale that was found dead off the coast of Spain had 64 pounds (29 kilograms) of garbage in its digestive system. The 33-foot whale's carcass surfaced in February near a lighthouse ...