Dawn Brancheau, an experienced whale trainer at SeaWorld Adventure Park, shown performing Dec. 30, 2005, was killed in an accident with a killer whale at the SeaWorld Shamu Stadium in Orlando, Fla., Feb. 24, 2010. A SeaWorld official said that the whale pulled Brancheau, 40, into the water, contradicting earlier police reports that said she either slipped or fell into a tank holding the killer whale. Witnesses also described the animal coming to the surface to attack the woman.

SeaWorld Adventure Park trainer Ken Peters, left, looks to a killer whale during a performance Nov. 26, 2006, at Shamu Stadium inside the park in San Diego. Peters was injured Nov. 29, 2006, suffering a broken foot after a 7,000-pound whale, not pictured, grabbed him and twice held him underwater during a show.

Little Joe, a 300-pound adolescent western lowland gorilla, is seen inside his enclosure at the Franklin Park Zoo in Boston, April 22, 2007. Little Joe earned fame when he escaped from the zoo's former habitat in 2003, attacking a 2-year-old girl and a teenage employee.

Claudia Vollhardt hugs a killer whale at Loro Parque Zoo in Puerto de la Cruz, on the Spanish Canary Island of Tenerife, in this file photo. A killer whale bit and dragged Vollhardt underwater repeatedly during training on Oct. 6, 2007, before releasing her with a badly bruised chest and broken arm. A park spokeswoman said it was an accident and not an attack.

Charla Nash, right, was attacked by her friend's 200-pound chimpanzee named Travis, shown left. Connecticut officials announced Dec. 7, 2009, they would not file charges against the chimp's owner, Sandra Herold. In an interview with Oprah Winfrey, Nash said she doesn't remember anything about the attack.

Berani, a Sumatran tiger who attacked a zookeeper, was back on display at the San Antonio Zoo, in this July 18, 2007, file photo. Officials said that the zoo worker, Jeff Tierney, forgot to close and lock a series of gates behind him.

This undated photo provided by the San Francisco Zoo shows Tatiana, a female Siberian tiger who escaped on Christmas Day, 2007, killing Carlos Sousa Jr., pictured right in an undated photo, and injuring two others.

Ashlee Pfaff died Feb. 24, 2007, after she was attacked by a jaguar at the Denver Zoo. The Bolivian-born jaguar named Jorge, shown in this file photo, right, that killed Pfaff, a zoo keeper, was well-behaved as a young cat, but he had a twin brother that was so mean his handlers named him Osama, a Bolivian zoo official said.

"Crocodile Hunter" Steve Irwin died in 2006 while snorkeling in part of the Great Barrier Reef. Authorities said he was killed by a stingray barb that pierced his chest. <p> At left, he poses with his daughter, Bindi Irwin.

Surfer Bethany Hamilton lost her left arm after a shark attack at the Turtle Bay Hilton Hawaiian Resort in March 2004.

Roy Horn, left, 59, of the performing duo Siegfried & Roy, poses with a white tiger. Horn was mauled and critically injured by a white tiger while performing on stage at the Mirage Resort, Oct. 3, 2003, in Las Vegas. Horn was taken to University Medical Center in Las Vegas for surgery. The attack occurred on his birthday.

Steve Sipek, owner of Bobo, the 600-pound tiger shot and killed by a wildlife officer after escaping his south Florida home, grieves over a photograph of the big cat on July 14, 2004, in Loxahatchee, Fla. The 6-year-old Bengal tiger that had scaled a 12-foot fence was shot multiple times after the animal lunged at a wildlife officer, according to a state Fish and Wildlife spokesman. Sipek, formerly an actor who twice portrayed Tarzan in the movies in the 1970s, called the killing a murder.

A female journalist screams after she is bitten by a giant panda in her left shoulder at the China Wolong Giant Panda Protection and Research Center on Aug. 9, 2005, in Wolong of Sichuan Province, southwest China. The journalist was attacked by the giant panda when she crossed a fence and posed for pictures with the bear. Pieces of her skin and tissues were torn off by the panda. Journalists flocked to the Wolong Nature Reserve as selection of the giant pandas to be sent to Taiwan kicked off on Aug. 9 at the nature reserve. A nine-member selection panel was established at Wolong Giant Panda Protection and Research Center. The Chinese mainland announced plans to send giant pandas to Taiwan after the mainland visit of Taiwan's Nationalist Party leader Lien Chan in May.

Kane, a 4-year-old pit bull that killed his master, stays in a cage at the Marikina city pound suburbs of Manila, Philippines, on July 29, 2007. Kane attacked Zenaida Sebastian, 56, and granddaughter Stephany, while having a meal on July 21, 2007. Kane killed the grandmother and seriously mauled the granddaughter at their house. City chief veterinarian Manuel Carlos placed the dog under two weeks of observation for rabies infection and said if the owners refused to take the dog back, he would look for a new owner for adoption and rehabilitation. If everything else fails, they will have to apply the mercy killing. Some pet owners in Manila use their pit bulls in illegal dogfighting matches.

The corpse of the female bear that mauled and killed a man in northern Sweden in 2004 was shown in Jokkmokk, Sweden, by the hunters who had killed it. The bear committed the first fatal attack on a man in Sweden in 102 years.