ELEPHANTS HOLD FUNERALS Elephants are known to grieve by gently touching the bones of lost herd members with their trunks. They sometimes stand vigil over a dead companion and have even been observed trying to bury or cover the body with leaves and branches.
CAPUCHIN MONKEYS USE TOOLS Capuchin monkeys use rocks to crack open nuts, but they also display complex emotions. In a famous experiment, they refused to perform a task if they saw a neighbor being rewarded with a better treat, essentially showing envy and a sense of fairness.
PRAIRIE DOGS HAVE A COMPLEX LANGUAGE Prairie Dogs have one of the most complex communication systems ever discovered in animals. Their calls can describe types of predators, size, shape, speed, and even the clothing color of approaching humans. It’s the closest thing found to a grammatical animal language.
