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
Deaf animal Deaf animal Some strains of animals, such as white cats, have a tendency to congenital deafness. It is also not an uncommon problem for purebred dogs. Some known chemicals and elements can also affect deafness in animals. Deafness can occur in almost any breed of cat or dog. This includes both pure-breed and mixed-breed animals although there may be more prevalence in some specific breeds. "The association between patterns of pigmentation and deafness in the dog has a long-documented history, with reports dating back over one hundred years. Long suspected of having a genetic basis, the search for loci with