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Tourists can hand-feed some dolphins around the coast of Australia, but dolphins fed this way are less likely to form strong social bonds with their peers
When the common swift is nesting, it sometimes enters an energy-saving “torpor” state that is a bit like hibernation
The ability to sense the internal state of the body, known as interoception, may be linked to our mental health, and macaques appear to have similar capabilities to us
CT scans of humans, chimpanzees and macaques reveal that human collarbones slow their growth rate in the final months of pregnancy, perhaps to make it easier for babies to squeeze through the pelvis
A tiny snake-like animal that lived about 308 million years ago had evolved to lose its forelimbs