The emotional life of animals has historically been a complicated and controversial subject within the scientific community. However, due to recent recent on the subject, the scales are slowly tipping toward the conclusion that animals do have emotions. Many researchers now claim that emotions might have evolved out of social necessity, like in humans, helping animals adapt to different situations. Recently, researchers have observed that animals are capable of a range of emotions, such as happiness, sadness, empathy, grief, curiosity, anger, anxiety and fear. Elephants, along with sea lions, geese, bears, monkeys and moose all appear to be hit hard by the death of a loved one. Dolphins, chimpanzees, elk and rats are among the multitude of mammals and smattering of birds that engage in play, appearing blissfully happy when they do. The most recent studies show that when portions of the brain that get fired up when people experience emotions are compared to those nestled in creature craniums, you get some corresponding hotspots.