Elvis, the polar bear pregnancy detection dog
Zoos around the country will soon find out whether a beagle named Elvis can let them know when their polar bears are pregnant.
The 2-year-old has been specially trained for a year by a Kansas handler who has taught dogs to sniff out everything from explosives to bed bugs.
A Cincinnati Zoo animal conservation scientist had the idea after reading about studies on using dogs to detect cancer. (Associated Press)
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