The 'transgenic' macaques behave similarly to humans afflicted with autism -- making repetitive gestures, and displaying anxiety and poor social interaction.
The new year is young, but big changes are already underway that will affect many animals, from manatees to moose.
The ruling says a macaque that snapped grinning selfies that went viral last year online does not own the photographs.
The ancient monkeys show they can perceive the sound quality in the same way humans can.
2015 was a year of both breathtaking highs and devastating lows for the animal kingdom.
Animal selfie stars of 2015 included a smiling grizzly bear, a relieved eagle and a furry little Australian animal.
The 2015 winners have been announced for a competition dedicated to the humorous side of nature.
Habitat loss and hunting are among the primary threat factors for the animals on the list.
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