This week saw the tragic death of a zookeeper in Germany. A 43-year-old female was killed by a tiger after a "gate wasn't properly shut," according to AP. Not all zoo news was bad this week, however. The Philadelphia Zoo recently began opening enclosed trails around its property, allowing primates to "leave the confines of their exhibits and travel throughout the property," explained AP.

The zoo's general curator, Kim Lengel, said, "They get to see everything that's happening in the zoo. They get to travel, they can climb trees, and they really take advantage of it. And if they're tired of it, they go back inside."

In South Africa, the story of Solly, a 4-year-old hippo that became trapped in a swimming pool, ended tragically. The young hippo had been chased from his herd and ended up in a pool. Despite plans to rescue him, a vet reportedly arrived too late. According to AP, the manager of the game preserve where Solly became stuck said, "It started out as a happy story and now it's a tragic story. It's devastating."

The mystery behind the deer that have moved between islands in Hawaii was finally solved this week. A helicopter pilot pled guilty to illegally flying axis deer from Maui to the Big Island, reported AP. The man and his accomplices also allegedly transported non-native mouflon sheep between the islands. Accoridng to AP, the animals don't have natural predators and "Their presence has damaged fragile native ecosystems and farms on the islands where they've become established."

Below, find some of the best animal photos taken around the world this week:

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  • A baby alligator merges from its egg shell as it is hatched at Gatorama's "Alligator Hatching Festival" Sunday, Aug. 19, 2012 near Palmdale, Fla. Gatorama officials said it was a very good year for eggs. The animal park got 3,233 alligator eggs from this year's harvest of more than 37,000 eggs gathered by state sponsored hunters. In the wild only two percent of the gators will mature but at the park 98% will mature. Visitors to the park can hold a egg in their hands and watch the baby gator being hatched. (AP Photo/J Pat Carter)

  • Elton, an eight-week old Spectacled Owl, (Pulsatrix perspicillata) looks out as he is weighed at London Zoo, Wednesday, Aug. 22, 2012. Zookeepers are grabbing their scales and reaching for the tape measures, as they prepare to monitor every animal at ZSL London Zoo

  • A five-day-old baby hippopotamus swims next to its mother, Kibu, at the National Zoo in Kuala Lumpur, Malaysia, Friday, Aug. 24, 2012. The calf, the offspring of 21-year-old Kibu and 31-year-old Duke, was born on the first day of Eid al-Fitr, which marks the end of the fasting month of Ramadan. (AP Photo/Lai Seng Sin)

  • This photo provided by Caribou Nine Productions via the Nevada Department of Wildlife shows a mountain lion released back into the wild Saturday, Aug. 25, 2012, around Lake Tahoe, a day after the animal tried to enter a Reno Nev. casino. Guests reported seeing the 100-pound cat trying to walk into the casino around dawn Friday morning. When the animal couldn't negotiate the revolving door, it hid under an outdoor stage in a nearby plaza. (AP Photo/Caribou Nine Productions via the Nevada Department of Wildlife)

  • This image provided by the San Diego Zoo shows a giant panda cub receiving its first veterinary exam Thursday, Aug. 23, 2012, in San Diego. The exam allowed staff to determine that the cub is healthy, thriving and weighs 1.5 pounds, but were not able to determine the sex. This is the sixth giant panda born at the San Diego Zoo, the most born at a breeding facility outside of China.(AP Photo/San diego Zoo, Ken Bohn)

  • Female panda Yang Yang, left, and son Fu Hu rest in their compound at the Schoenbrunn zoo in Vienna, Austria, Thursday, Aug. 23, 2012. Fu Hu is the second son of Yang Yang and celebrates his second birthday on Thursday. (AP Photo/dapd, Lilli Strauss)

  • US actress Kristin Bauer van Straten at the David Sheldrick Elephant Orphanage in Nairobi, Kenya, Saturday, Aug. 25, 2012. Bauer is a celebrity patron of the International Fund for Animal Welfare, IFAW, and is in Kenya to make a documentary that will highlight the threat to elephants and rhinos. (AP Photo/Sayyid Azim)

  • With temperatures hovering around 30 degrees centigrade, an Asian elephant and its offspring enjoy a shower in their enclosure at Berlin's Zoologischer Garten zoo, on August 21, 2012. AFP PHOTO / JOHN MACDOUGALL

  • Tian Tian the Panda in her enclosure at Edinburgh Zoo on her ninth birthday Friday Aug. 24, 2012. Keepers at Edinburgh Zoo made a three-tiered panda cake with carrots instead of candles for Tian Tian, but the birthday girl did not seem too impressed with her gift and refused to eat it this morning. (AP PhotoAndrew Milligan/PA Wire) UNITED KINGDOM OUT NO SALES NO ARCHIVE

  • Tian Tian the Panda in her enclosure at Edinburgh Zoo on her ninth birthday Friday Aug. 24, 2012. Keepers at Edinburgh Zoo made a three-tiered panda cake with carrots instead of candles for Tian Tian, but the birthday girl did not seem too impressed with her gift and refused to eat it this morning. (AP PhotoAndrew Milligan/PA Wire) UNITED KINGDOM OUT NO SALES NO ARCHIVE

  • MUENSING, GERMANY - AUGUST 26: An oxen decorated with a flowers waits for the beginning of the 5th ox-racing championships (5. Muensinger Ochsenrennen) on August 26, 2012 in Muensing, Germany. The competition, which only takes place once every four years, is a race of jockeys riding bareback on oxen across a field and is complemented with a morning procession and 'ox-ball' (featuring roasted ox) in a festivities tent after the races. (Photo by Johannes Simon/Getty Images)

  • Mongoose lemurs run on a protected path above a walkway at Philadelphia Zoo Monday, Aug. 20, 2012, in Philadelphia. The zoo is in the process of building a trail network that will allow animals from similar habitats to travel among the exhibits. (AP Photo/Matt Rourke)

  • With temperatures hovering around 30 degrees Centigrade a Polar Bear sun bathes in its enclosure at Berlin's Zoologischer Garten zoo August 21, 2012. AFP PHOTO / JOHN MACDOUGALL

  • LOGAN, KS - AUGUST 24: A bull sniffs through a barbed wire fence on the Becker family farm August 24, 2012 in Logan, Kansas. Like many Kansas farmers affected by the record drought, the Beckers are working hard to hang on to their farm, which has been in their family for five generations. Most of Kansas is still in extreme or exceptional drought, despite recent lower temperatures and thunderstorms, according to the University of Nebraska's Drought Monitor. The record-breaking drought, which has affected more than half of the continental United States, is expected to drive up food prices by 2013 due to lower crop harvests and the adverse effect on the nation's cattle industry. (Photo by John Moore/Getty Images)

  • Yuan Zi, one of the two giant pandas which arrived last winter in France from China, is pictured, on August 23, 2012, at Beauval zoo in Saint-Aignan, central France. AFP PHOTO ALAIN JOCARD

  • Meerkats stand up on a weighing machine at London Zoo during the annual weighing and measuring of the animals at the zoo, Wednesday, Aug. 22, 2012. (AP Photo/Alastair Grant)

  • A woman poses with her dogs during the FCI International dog show in Minsk on August 25, 2012. AFP PHOTO / VIKTOR DRACHEV

  • A keeper at London Zoo measures an African millipede, in London, Wednesday, Aug. 22, 2012. Zookeepers are grabbing their scales and reaching for the tape measures, as they prepare to monitor every animal at ZSL London Zooís annual weigh-in. (AP Photo/Alastair Grant)

  • Vicki Fyson a trainee keeper at London Zoo attempts to weigh a Humboldt penguin, in London, Wednesday, Aug. 22, 2012. Zookeepers are grabbing their scales and reaching for the tape measures, as they prepare to monitor every animal at ZSL London Zoo's annual weigh-in. (AP Photo/Alastair Grant)

  • A person sprays water on his dog on August 19, 2012 in Godewaersvelde, northern France, as France sweltered under a summer heatwave. AFP PHOTO / PHILIPPE HUGUEN

  • Baby alligator gather on a log in a holding tank minutes after they were hatched at Gatorama's "Alligator Hatching Fesitval" Sunday, Aug. 19, 2012 near Palmdale, Fla. The animal park got 3,233 alligator eggs from this year's harvest of more than 37,000 eggs gathered by state sponsored hunters. In the wild only two percent of the gators will mature but at the park 98% will mature. Visitors to the park can hold a egg in their hands and watch the baby gator being hatched. (AP Photo/J Pat Carter)

  • One of the crocodiles at Gatorama near Palmdale, Fla. leaps out of the water to grab food from an animal keeper Sunday, Aug. 19, 2012. It is the time of year that chirping, grunting and snapping baby alligators emerge from their shells to meet the world. Gatorama is marking this occasion by hosting an

  • A Grey Crowned Crane grooms itself in its enclosure at Berlin's Zoologischer Garten zoo August 21, 2012. AFP PHOTO / JOHN MACDOUGALL

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