First, a gruesome attack at new york's famed bronx zoo. A 25-year-old man apparently jumped into fences into a tiger enclosure and was mauled, as horrified vitters looked on. John muller has the... See More
First, a gruesome attack at new york's famed bronx zoo. A 25-year-old man apparently jumped into fences into a tiger enclosure and was mauled, as horrified vitters looked on. John muller has the details. Good morning, john. Reporter: Good morning, bianna. It boggles the mind what happened here at the bronx zoo yesterday. A man on a monorail dropped 17 feet, down to the ground. Scales two fences. Winds up in the tiger pen. He is alive for two reasons, the tiger didn't want him dead. And there was a great response by emergency workers. He's in stable condition this morning, upgraded from critical. As crazy as this sounds, the behavior is not as uncommon as you might expect. A man jumped inside the tiger den. For more than 30 years, millions of tying riders see the tigers from this monorail. Alone in the last car, he jumped 17 feet into the tiger den. Almost immediately 25-year-old david dela lobos, was in the jaws of a tiger. This is not the tiger. But it is the siberian, the largest cat in the world, that could kill a man if it wants to. If the tiger wanted to do harm to this indual, he would have had time to do that. Reporter: Quick-thinking rescuers used fire hoess to distract the tiger and pull the man to safety. He sustained bite wounds on his arm, shoulder and back. Why did he do it? Only he knows. His family declined to talk on camera. But a former classmate said he has been acting strange. I've seen some of the stuff he wrote on facebook. Reporter: It's a tragic example of mind-boggling bad behavior at zoos. Look at this tourist in alaska, who jumped a barrier to get a picture of a polar bear. In this video from singapore, a man crosses a mote to get to the tiger enclosure. Somebody wants to drop 16 feet down, I don't know how you would manage for that. You could encase the animals in completely. That's not fair to the animals. Reporter: Another big problem, taunting. It turned deadly in 2007 in san francisco. Get out of here. Reporter: Three men allegedly harassed a 350-pound tiger who leapt out of her enclosure, killing one of them. The latest zoo attack, doctors expect the victim to survive. The victim facebook page lists mother earth as his religion. For their part, the bronx zoo said they did a great job out here yesterday. And they did, along with city officials. They saved not only this man's life, but the tiger's life, as well. As he recovers in the hospital, the tiger should be back in its pen today. You brought us stories a few times before, how dangerous the animals are. Don't jump in the cage. It solves a lot of problems.
This transcript has been automatically generated and may not be 100% accurate.