captions by vitac www.vitac.com deadly danger in the great outdoors. a florida teenager lost the lower part of his right arm to alligator. a california man was in his kayak when a great white shark took a chunk out of his boat on saturday. just from the start of this month, there have been at least seven different attacks across the country by bears, alligators, a shark and a mountain lion. are the attacks on the rise? joining me now, a man who knows about this thing. he survived a grizzly attack himself. jack hanna is the director emeritus at the columbus zoo and aquarium. he s outside the venetian in scottsdale, arizona, and has a um could of his alligators with him. jack, welcome. good to be here, nice to see you, piers. it appears to be quite a worrying time at the moment for attacks by animals. what do you make of what s going on? people are trying to equate the overheating, in other words, the extreme high temperatures we re getting, with this spate of attacks