Bovid hybrids may occur naturally through undirected interbreeding, traditional pastoral practices, or may be the result of modern interventions, sometimes bringing together species from different parts of the world.
[citation needed] Wisent have also been crossed with domestic cattle to produce the żubroń.
[citation needed] Generally, they are horned with heavy set forequarters, sloping backs, and lighter hindquarters.
Bull and cow cattalos are reported in Wonders of Animal Life, edited by J.
[3] The zebu (Bos taurus indicus), is the common domestic cow in much of Asia.
[citation needed] In The Variation of Animals and Plants Under Domestication, Charles Darwin wrote: Bos primigenius and longifrons have been ranked by nearly all palaeontologists as distinct species; and it would not be reasonable to take a different view simply because their domesticated descendants now intercross with the utmost freedom.
All the European breeds have so often been crossed both intentionally and unintentionally, that, if any sterility had ensued from such unions, it would certainly have been detected.
The late Lord Powis imported some zebus and crossed them with common cattle in Shropshire; and I was assured by his steward that the cross-bred animals were perfectly fertile with both parent-stocks.
Mr. Blyth informs me that in India hybrids, with various proportions of either blood, are quite fertile; and ... are allowed to breed freely together.
This gives rise to the infertile male dzo, often used as oxen, as well as fertile females which are bred into cattle breeds and can serve as milk cows.
The hybrid offspring are occasionally kept by farmers in northern Alberta where the snowy, cold winters necessitate a cold-hardy animal.
Domestic yak bulls mated with bison cows produced fully fertile offspring.
[7] There were suggestions of crossing the beefalo (an American bison-domestic cattle hybrid) to Cape buffalo, although this idea essentially ended when the Cape buffalo was found to have 52 chromosomes (instead of 60 as in cattle and bison), meaning that the hybrid's success would be unlikely.
Mitochondrial DNA testing of the Custer State Park herd have shown that 6% of the animals have bovine DNA traits and Dr. Derr from Texas A&M University, who led a study into bison genetics, conceded that the ‘hybrid’ animals tested were at least 15-20 generations from the original base stock and those animals contained only 0.003% bovine DNA.
Due to many base herds having started pure with feed stock from pure public herds such as Elk Island Park, this may be a high estimate and the true number of bison containing bovine DNA is likely to be significantly lower.