There is a species of monkeys that wash their hands and feet in urine

We have to admit that monkeys are really cute and interesting animals. But what makes them interesting is their behavior, because, for example, capuchin monkeys urinate on their hands and feet when they want to find a partner. 

“We think the alpha males might use urine-washing to convey warm, fuzzy feelings to females, that their solicitation is working and that there’s no need to run away,” primatologist Kimran Miller told NBC News. “Or they could be doing it because they’re excited.”