Read more at Buzzle:
Thousands of greyhounds die each year—some in the name of “selective breeding”—before they ever touch a racetrack. Many dogs do not make it to the nominal “retirement” age of 4 or 5.
Approximately 30-50% of heifers suffer from mastitis, an infection of the udders that cause swelling and makes milking excruciating. Mastitis is exacerbated by the hormones given to cows to make them produce more milk. Additionally, the infection is treated with antibiotics that end up in their milk. Some udders can weigh as much as a full-grown man.
Over 25 to 100 million vertebrate animals of which a few are the closest relatives to man were reported to be used for animal testing in US. Chimpanzees, monkeys, beagles, dogs, cats, rabbits, rats, birds, farm animals, etc., were used for animal experimentation. The invertebrate number is still high as over 100 million of them are estimated to have been used for lab testing.