Study: Catalina bison aren't purebred
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Long thought to be purebred, the wild bison of Santa Catalina Island in fact have a little bit of cow in them, the first DNA analysis of the animals found. Nearly half of the 98 American bison shipped off the island in 2004 have cattle genes that were passed on through the mother. Catalina bison were believed to be purer than those on the mainland because they lived in isolation on the island since the 1920s.
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By JOHN FLESHER  SENEY NATIONAL WILDLIFE REFUGE, Mich. - Tracy Casselman runs a hand over the smooth, gray bark of an American beech, noting the scratch marks left by black bears that have clambered up the tree to munch nuts rich in fat and protein.
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Apparently, the same things that makes large, toothy predators so good at hunting big game also make them more vulnerable to extinction - as is shown in a new study of a
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These pachyderms aren't just going after peanuts.
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Garfield, Morris and the Aristocats get the fame, but look to the origins of today's furry felines and you find "lybica," a Middle Eastern wildcat. Domestic cats can be traced to wild progenitors that interbred well over 100,000 years ago, new research indicates.
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Some people have a genetic variation that may help them resist the human form of mad cow disease, a study in mice suggests.
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Researchers think they have found the modern whaleâs closest evolutionary ancestor.
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SOME people have a genetic variation that may help them resist the human form of mad cow disease, a study in mice suggests. But when infection does occur the disease takes a different form, meaning there may
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(Corrects fifth paragraph to say most geese in Hungary case were slaughtered, not killed by bird flu)
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New animal research indicates that a single molecule may be linked to nicotine dependence, the Associated Press reported Nov. 4. For the study, researchers in California worked with a single gene to genetically
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A new genetic study of the tiger family has discovered a previously unknown sub-species of the big cats, an researchers report in Plos Biology.
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A group of scientists have proposed that an âunnamedâ population of the wide-ranging North American butterfly genus Lycaeides is a hybrid species.
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Millions of feral cats&#151;domestic animals that have become wild&#151;are said to be running free throughout the U.S., threatening birds and public health.
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The Canadian Food Inspection Agency is testing the remains of a dairy cow from Alberta suspected of having bovine spongiform encephalopathy, or mad cow disease. An initial set of tests failed to rule out the possibility the 4-year-old cow died of BSE.
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The only surviving pair of endangered pygmy rabbits released as part of a program to increase their numbers in the wild have dodged coyotes, badgers, hawks and owls and found time for love. Proud scientists announced Thursday that the rabbits have successfully bred.
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WINNIPEG, Manitoba -- A final laboratory test has confirmed that an Alberta dairy cow had mad cow disease, the second case Canada has found in its herd, an industry source briefed by veterinary officials said yesterday. "It is positive," the industry source told reporters after a briefing from the agency. The animal did not enter the human or animal food ...
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A research dig on the site of a proposed Lubbock zoo has turned up a pieces of an ancient bison bone. Daniel Rafuse &#151; one of a three-person team from Texas Tech University and the Lubbock Lake Landmark working the site &#151; said that the bone was found nearly 7 feet below the surface.