Fans of Uggie in the silent movie The Artist were outraged when the dog didn't get an Oscar nomination. Now Uggie's owner tells a magazine that movie was the Jack Russell terrier's last. He's retiring the 10-year-old animal. Uggie wants to relax.
Humans have complicated genetic structures — not so dogs. Almost every physical trait in canines is controlled by just a few genes, which means custom-breeding a dog is only a matter of flipping a few genetic switches.
Mice and rats are the most common lab animals. That's why some influential new guidelines on how to house mother rodents and their babies have created an uproar. Some experts at research centers say there's no evidence that making costly changes will really benefit the animals.
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