Transboundary breed are reported to only be found in one "region", which may include several countries, and an international transboundary breed is one that is reported to be found in multiple regions. For example, the Holstein Fresian cattle is an international transboundary breed, because it is found in several different continents and regions. 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
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