Did you know that tufted capuchin monkeys (Cebus apella) rub their fur vigorously with substances such as leaves, fruit, or insects? Such substances are often insecticidal, antiseptic, or anti-inflammatory.
In Rhesus monkeys the optimal sexual strategy is different for Alpha males, other males and females. Alpha males want females to mate exclusively with them, whereas other males and females benefit from promiscuity.
We all show some form of compulsive behavior. I triple check to make sure I locked my car, knowing that it’s locked but still feeling the need. But what if compulsions, rituals, and repetition rule your everyday live?
Besides the study of the relation between humans and popular pets such as cats and dogs, human-horse interaction is an increasingly popular subject of science.