Transboundary breed Transboundary breed A transboundary breed is a breed which is present in several countries. Transboundary species of the five significant livestock types (cattle, sheep, goats, pigs and chickens), have been developed for a hundred years or more in intensive manufacturing systems, which has led to global availability. A relatively small number of worldwide transboundary breeds compose the ever-increasing share of total global animal products. However, only in North America and the Southwest Pacific do the number of transboundary breeds surpass that of local breeds. There can be both regional and international types of transboundary breeds. Regional breeds are breeds that
Animal sexual behaviour birthplace, which reduces the chance of mating with a close relative. Toads display breeding site fidelity, as do many amphibians. Individuals that return to natal ponds to breed will likely encounter siblings as potential mates. Although incest is possible, "Bufo americanus" siblings rarely mate. These toads likely recognise and actively avoid close kins as mates. Advertisement vocalisations by males appear to serve as cues by which females recognise their kin. Animal sexual behaviour Animal sexual behaviour takes many different forms, including within the same species. Common mating or reproductively motivated systems include monogamy, polygyny, polyandry, polygamy and promiscuity. Other sexual