Content Warning: The following article contains spoilers.Every good movie needs a good villain, or so you'd assume. More often than not, a movie is only as good as its villain, as they'll usually be ...

Dogs are capable of learning the instruction “do that again,” and can flexibly access memories of their own recent actions—cognitive abilities they were not known to possess, researchers report.

In a series of studies over more than 20 years, evolutionary biologists have demonstrated that paper wasps, despite their tiny brains, have an impressive capacity to learn, remember and make social ...