Share on X CAYO SANTIAGO, Puerto Rico — It wasn't something out of Walt Disney. The primate inhabitants of Cayo Santiago didn ...

There are many kinds of laughter. People may guffaw at a joke. They may giggle nervously in an uncomfortable situation. They may chuckle with mild amusement. They may snicker to express contempt — ...

A study investigated whether the genes for schizophrenia and autism appeared more frequently as mammals evolved bigger brains ...

The daily movements of brown howler monkeys (Alouatta guariba) in the forest are determined by an interplay of environmental, ...

Scientists observed spotted hyenas (Crocuta crocuta) playing in the wild and found that their precise, sophisticated ...

A new HIV vaccine developed by La Jolla Institute for Immunology (LJI), Scripps Research scientists and IAVI has the potential to protect humans from developing HIV infection and AIDS. This HIV ...

A viral video of a young gorilla bursting into laughter-like sounds while being gently tickled by a familiar human caretaker ...