Izard 9 March In contrast, montane voles have a polygamous mating system. Then they join their bodies together end to end at their abdomens.
Smithsonian Contributions to Zoology. Cuckoldry in fish. When females emerge from their nest burrows, males sometimes force them to the ground and mate with them. Male bottlenose dolphins have been observed working in pairs to follow or restrict the movement of a female for weeks at a time, waiting for her to become sexually receptive.