The notion of such "transactional sex" among chimpanzees has been critiqued by many scholars, however; androcentric bias and researchers projecting their own gendered assumptions onto non-human animals may play a significant role in interpretations of "prostitution. Penguins use stones for building their nests. Some pair-bonded female penguins copulate with males who are not their mates and then take pebbles for their own nests. According to the report about the study published by BBC News Online , some female penguins sneak around on their partners. These prostitutes have sex with unattached males and take a pebble from the male's nest after having sex. Pebbles are used for building nests, but are scarce, and hence valuable.

There are about 18 species of penguins , and though their mating behaviors are "fundamentally similar," each species has its own quirks, said penguin researcher Emma Marks of the University of Auckland in New Zealand. Breeding usually takes place during the Antarctic summer October through February , though some species do mate in the winter. Males arrive at the colony first and choose their spot to wait for prospective mates.

Fur seals have been caught engaging in an extreme form of sexual behaviour. Specifically, trying to have sex with penguins. This media cannot be played on your device. Things are heating up in the cold climes of the sub-Antarctic.