But many other dog breeds simply resemble pit bulls in appearance, even if they don't have any genetic pit bull ancestry.
When predicting the GBV of purebreds, one would expect that data on crossbred animals of the target breed would provide less information than the same amount of data on purebreds from that breed, simply because the crossbreds (at least first crosses) contain only half the number of haplotypes of that breed.
Moreover, tortoises are not indiscriminate breeders and so will not necessarily breed if simply placed together.
Far too many racehorses are bred each year simply because they are regarded as disposable once their short racing careers are done.
Phillip Dutton, an Australian rider now based in West Grove, Pa., took second place with 41.2 penalties after a clear round in the stadium jumping phase astride the English-bred Simply Red.
Was Smokey Image, a previously undefeated California-bred, simply outclassed in the San Felipe or do you just throw that race out? "You had to wonder why [Smokey Image] decided not to try that race," Privman said.
Some horses are simply not bred to run such a distance, and two gruelling races in a month — the Preakness is held two weeks after the Derby, with the Belmont traditionally three weeks after that — take a heavy toll on horses that then try to run the longest race of their lives.
Before then, dogs had simply been bred with their practical uses in mind, meaning that their physical capacities were more important than their aesthetic appeal; now, inbreeding is so ubiquitous that the Imperial College researchers estimate the UK's boxer dog population of 20,000 to have the variety of genetic material you would expect to find naturally in a population of about 70.
"Failing to hold people accountable for their actions simply breeds more discontent, more violence, as people decide that their only option is to revenge the crimes themselves".
Instead, he argues that worsening living conditions, increasing government paranoia and growing popular resentment will simply breed greater violence.
Indiscriminate bombing of countries that harbour suspected terrorists will simply breed more extremists seeking revenge.The focus should be on upgrading intelligence-gathering capabilities and tightening domestic security.
