Animals That Urinate On Each Other 

Patagonian Maras Use Pee To Show Commitment The Patagonian mara, an adorable, rabbit-like rodent, is a monogamous species that mates for life, only replacing its partner when one of them dies. Adorably, like some kind of romantic lead, a male mara will follow his female wherever she leads, creating a mobile territory in the process.

Female Giraffes Pee In Male Giraffes' Mouths When they’re in heat, female giraffes secrete pheromones in their urine. While some animals might just take a whiff and figure it out from there, male giraffes take it a step further and actually taste the pee to see if the female is receptive to sex.

Cats Spray Pee Everywhere To Send Sexy Messages If you’re a cat lover, then you know that there’s nothing better than a warm, soft bundle of fuzz purring on your lap. There are trade-offs, though, and one of them comes in the form of pee. Cats who aren’t neutered or spayed spray urine absolutely everywhere. Sometimes having a cat means scrubbing pee out of your microwave.

Male Porcupines Pee On Females From The Treetops Porcupines are solitary creatures, so it’s not like they’re going to run into potential lovers. During the 12 hours per year that females are fertile, they release musk, which is a combination of urine and pheromones. This attracts males porcupines, who are so desperate for love that they will fight each other for dominance. Once a victor emerges among the men, he still has to win over the female. He does this by climbing a tree and pissing all over her from the branches.

Capuchin Monkeys Bathe In Their Own Urine Capuchin monkeys, which can be found throughout Central and South America, use their urine to convey the fact that they're sexually available. Males pee on their hands and then rub the liquid all over their bodies. When females smell the pee of an attractive adult male that’s ready to get down, their brains react differently than when they smell the pee of a juvenile. It also helps female capuchins weed out males they just aren't that into.

Lobsters Pee In Each Other's Doorways Male lobsters are so obsessed with beating each other half to death that they rarely have time for romance. If a female lobster wants to attract a mate, she has to get creative. 

Hippos Spin Their Tails Like Propellers To Spread Their Waste Like many mammals, male hippos attempt to attract mates by marking their territory. Unlike most mammals, they do this using not only urine, but also feces. In order to spread their waste as far as possible, they spin their tails like a propeller while they are... in the act. They also urinate backwards. This pungent aroma attracts female hippos, and they get down to business shortly after relieving themselves.

Pheromones In Male Tilapia Urine Prepare Females For Reproduction Hopefully this doesn’t put you off your next fish dinner, but male tilapia are piss kings. Their urine contains powerful pheromones that can have many different effects on females. First of all, they clue the females into their place in the tilapia pecking order. Dominant males actually have larger bladders, which not only hold more pee, but also contain more pheromones. The more dominant a male is, the more often he’ll urinate.

Goats Wet Themselves With Excitement When female goats, or "does," go into heat, they start peeing a lot more often. This is because, like many animals who use pee for purposes other than waste management, they’re secreting pheromones meant to attract a mate.