Schwarzenegger's Muscular Dog

The breed pictured here is the "bully whippet," a breed of whippet with a genetic mutation that makes it more muscular and faster than the standard breed.

Wendy, the bully whippet pictured, lives in Victoria, British Columbia, and it is remarkable that she has two copies of the mutated gene and is therefore a "double-muscular" bully whippet that weighs twice as much as a standard one. Increased muscle mass, along with metabolism and very low levels of body fat, can translate to impressive super feats, including increased speed, agility and strength.

Specialists who breed dogs specifically look for animals with the same disabilities. Muscular dogs of both large and small sizes are called "bulls". They are strong and develop high speeds quickly. The rest of the "body builders" are not that different from their counterparts. For the four-legged "Schwarzenegger," the dog had not one, but two faulty myostatin genes. Eventually Big Wendy has broken all known records and been the subject of a study by highly professional geneticists.

Despite their fearsome appearance, the world's most exuberant dog has a docile temperament and playful disposition. The pet loves to run around the fields chasing other dogs and shows no carelessness towards strangers. In addition, the four-legged "terminator" is very affectionate and likes to lie for hours on the lap of his mistress.