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Smart Mice (1:22)
Watch this video about smart mice on HowStuffWorks. They didn't mean to create smart mice, but that's what happened when brain scientists genetically altered mice to lack a certain brain protein. The chance discovery could lead to new drugs to treat... More »
Meerkats Digging (1:29)
From the archives of Discovery: Meerkats are communal animals, and they can live in social groups of 50 or more individuals. Learn more about meerkats.
Daily Planet: Born to be Wild (6:16)
As wild marmots began to go extinct, conservationists started breeding them and releasing them into the wild. Some were even released into a special marmot reserve.
Celebrity Crusaders: Prairie Dog Cannibalism (1:41)
About 39 percent of prairie dog pups fall victim to cannibalism. Learn why on Animal Planet's "Celebrity Crusaders."
Celebrity Crusaders: Prairie Dog Warning Sounds (1:32)
Prairie dogs emit sounds to warn their fellow troop if danger approaches. Their barks become more rapid and intense depending on the danger. Watch and hear them on Animal Planet's "Celebrity Crusaders."
