Humans, chimps and other primates have all been shown to be susceptible to contagious yawning. Previous research has suggested that dogs are, too, unless — according to newly published findings — that dog is a puppy younger than seven months.
The fact that the future exists is second nature to us, but few animals share our awareness of events yet to happen. So let's meet the tayra, the first animal outside primates and birds to plan for the future.
Personality might seem like it's something you can only have if you've got complex, human-like intelligence, but that isn't necessarily the case. In fact, the brainless sea creature Actinia equina reveal distinct personalities in how they respond to threats.