In one of those funny little life coincidences, I've recently run across two very interesting articles about animal courtship and reproduction. Reading about how these animals hook up makes selling sex toys seem like a breeze! Hippos, for instance, throw feces at each other. Flatworms penis-joust and squid implant sperm directly into the skin!All-in-all, none of it sounds very pleasurable which is why I'm glad I'm human:

"More than anything, it's about being fast." It seems the males are quite literally under great pressure. A few years ago, Australian biologists discovered sperm packets under the skin of a freshly caught 15-meter (50-foot) female giant squid. Covered with a "gelatinous" substance, they had presumably been "injected" by a male, the researchers reported, "under hydraulic pressure," with a penis "up to 92 centimeters (three feet) long."

Flatworm penis-jousting and other amazing animal courtship rituals:httpv://www.youtube.com/watch?v=g8Rcue_ZHPY