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.
A new dinosaur species with a "sail" on its back was recently unearthed in northeastern Spain. Researchers say this mysterious "sail" helped the dinosaur regulate its body temperature or store fat.
Scientists have long beleived that three species of Madagascan lemurs were the only primates that hibernate. But new findings suggest that pygmy slow lorises, a relatively small primate that belongs to the so-called wet nosed classification from Southeast Asia, take long wintertime naps, too.
A recent study has shown that fish respond to stress with a slight body temperature increase.
Dinosaurs had an elaborate nasal passage to keep their unusually large bodies cool, protecting their brain from overheating.
Researchers from the University of Alberta recently discovered fossilized tail feathers and soft tissues of an Ornithomimus dinosaur that shed light on the evolution of modern-day birds such as ostriches and emus.