BALTIMORE, Maryland—On Tuesday, a Maryland federal judge ruled that the National Institutes of Health cannot lawfully refuse to retire federally owned chimpanzees formerly used for research to Chimp Haven, the federal chimpanzee sanctuary. The decision was issued in a lawsuit brought by the Humane...

Contents How many dogs are used in experiments every year? What kinds of experiments are dogs used in? What kinds of institutions use dogs in experiments? Which laboratories in the U.S. have the largest number of dogs in their possession? Where do laboratories get the dogs they use in experiments...

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Teddy was never meant to have a name. He was born a number, just one of tens of thousands of dogs—mostly beagles like him, chosen for their trusting, docile nature and compact size—bred in the United States for use in experiments each year. Teddy was meant to live and die in a laboratory, without...

In 1749, Pennsylvania put a bounty on Eastern gray squirrels —threepence per scalp. Their crime? Eating too much corn. It wasn’t the first time humans waged war on the bushy-tailed rodents: Massachusetts had already offered fourpence. A century later, cities along the Eastern seaboard began...