блин, не знал что это у кого-то удивление может вызвать)) они не только в задницу долбятся, а еще и в дыхательное отверстие, фу бле)
"Amazon Dolphin
The Amazon river dolphin or boto has been reported to form up in bands of 3–5 individuals enjoying group sex. The groups usually comprise young males and sometimes one or two females. Sex is often performed in non-reproductive ways, using snout, flippers and genital rubbing, without regard to gender.[61] In captivity, they have been observed to sometimes perform homosexual and heterosexual penetration of the blowhole, a hole homologous with the nostril of other mammals, making this the only known example of nasal sex in the animal kingdom.[61][62] The males will sometimes also perform sex with males from the tucuxi species, a type of small porpoise.[61]" http://en.wikipedia.org/wiki/Homosexual_behavior_in_animals#Amazon_Dolphin
"Amazon Dolphin
The Amazon river dolphin or boto has been reported to form up in bands of 3–5 individuals enjoying group sex. The groups usually comprise young males and sometimes one or two females. Sex is often performed in non-reproductive ways, using snout, flippers and genital rubbing, without regard to gender.[61] In captivity, they have been observed to sometimes perform homosexual and heterosexual penetration of the blowhole, a hole homologous with the nostril of other mammals, making this the only known example of nasal sex in the animal kingdom.[61][62] The males will sometimes also perform sex with males from the tucuxi species, a type of small porpoise.[61]"
http://en.wikipedia.org/wiki/Homosexual_behavior_in_animals#Amazon_Dolphin