Tragedy hit a chimpanzee sanctuary in South Africa this week, when an American graduate student sustained injuries in a severe chimp attack that have left him in critical condition. Andrew Oberle was repeatedly bitten and dragged nearly half a mile by the animals. No others were injured, reported the Associated Press.

In Texas, the death of a cattle herd has been tied to cyanide, or prussic acid, poisoning from "a common Bermuda grass hybrid found in grazing lands across Texas," explained AP. The grass, which was introduced in 1992, is known for its drought resistance. This was the first case of cattle cyanide deaths from the grass.

In lighter animal news, check out this live webcam of Atlantic puffins waddling around a remote Maine island. The cams, streamed from the largest U.S. puffin colony at Seal Island National Wildlife Refuge, were installed by the National Audubon Society and explore.org. In case you missed it, this puppy on a beach has a good time trying to make friends with a crab.

If Fourth of July fireworks and other noisy celebrations are likely to scare your pet, check out these tips for keeping them calm. Mother Nature Network recommends you start by desensitizing your dog with music or other noises. If you're thinking of taking your pet on vacation, check out these dog-friendly destinations.

Below find some of the best animal photos taken in the past week.

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  • Two-month old white tiger cubs roar at the Attica Zoological Park in Spata, near Athens, Friday, June 29, 2012. (AP Photo/Thanassis Stavrakis)

  • Snowy Owlets sit in a basket at the zoo in Hannover, western Germany, on June 27, 2012. The 4 weeks old owlets left their nest after 18 days after eclosing. The Snowy Owl was first classifield by Carolus Linnaeus in 1758. AFP PHOTO / HOLGER HOLLEMANN

  • BERLIN, GERMANY - JUNE 29: Jule, a baby Rothschild giraffe, stands next to her mother in her enclosure at Tierpark Berlin zoo on June 29, 2012 in Berlin, Germany. Jule was born at the zoo on June 10. (Photo by Sean Gallup/Getty Images)

  • BERLIN, GERMANY - JUNE 29: Jule, a baby Rothschild giraffe, runs in her enclosure at Tierpark Berlin zoo on June 29, 2012 in Berlin, Germany. Jule was born at the zoo on June 10. (Photo by Sean Gallup/Getty Images)

  • In this photo taken on Monday, June 25, 2012, kittens are seen at the spcaLA P.D. Pitchford Companion Animal Village & Education Center in Long Beach, Calif. Summer at animal shelters across the country means more animals, more work, more bills and more worries. And there are sometimes fewer staffers, volunteers and donations to handle it. (AP Photo/Damian Dovarganes)

  • One week old lion cubs make their first public appearance at a zoo in the southern Russian city of Stavropol, on June 29, 2012. AFP PHOTO / DANIL SEMYONOV

  • Female giant panda Shin Shin rests at Ueno Zoo in Tokyo Wednesday, June 27, 2012. The zoo announced Monday that Shin Shin, who arrived from China with a male partner in Feb, 2011, has shown signs of pregnancy. The zoo plans to suspend public viewing from July 3 to monitor her closely. A zoo official said the status won't be confirmed until the birth of a baby because there are many cases that end in false pregnancy. (AP Photo/Shizuo Kambayashi)

  • Female giant panda Shin Shin eats lunch at Ueno Zoo in Tokyo Wednesday, June 27, 2012. The zoo announced Monday that Shin Shin, who arrived from China with a male partner in Feb, 2011, has shown signs of pregnancy. The zoo plans to suspend public viewing from July 3 to monitor her closely. A zoo official said the status won't be confirmed until the birth of a baby because there are many cases that end in false pregnancy. (AP Photo/Shizuo Kambayashi)

  • Sydney, a 15-year-old camel, drinks water sprayed from a hose by Phillip Harwood at the Chattanooga Zoo on a hot summer day, Thursday, June 28, 2012, in Chattanooga, Tenn. (AP Photo/Chattanooga Times Free Press, Angela Lewis) THE DAILY CITIZEN OUT NOOGA.COM OUT

  • Three sea lion cubs explore their compound in the Hellabrunn zoo in Munich, southern Germany, Friday, June 29, 2012. (AP Photo/dapd, Lukas Barth)

  • Three-weeks-old tiger cubs sit at a zoo in Gianyar, Bali, Indonesia, Friday, June 29, 2012. They were born on June 11, 2012. (AP Photo/Firdia Lisnawati)

  • This June 28, 2012 photo shows veterinarian Susann Klessens feeding goat milk to an injured fawn found next to a burned-down house at the 20,000-acre Dahl wildfire south of Roundup, Mont. (AP Photos/Matthew Brown)

  • A Tiger offspring discovers with it's mother the outside enclosure at the zoo in Krefeld, western Germany, on June 25, 2012. The other tiger cubs hide under bushes. AFP PHOTO / ROLAND WEIHRAUCH

  • A chimpanzee holds an icy treat, made up of Crystal Light and fruit, at the Chattanooga Zoo on Thursday, June 28, 2012, in Chattanooga, Tenn. The treats provide a way for the chimps to cool down on a hot summer day. (AP Photo/Chattanooga Times Free Press, Angela Lewis)

  • In this Thursday, June 28, 2012 photo provided by the Chicago Zoological Society, Aussie, a 27-year-old polar bear at the Brookfield Zoo in Brookfield, Ill., cools off with a large block of ice in his pool as temperatures hovered near the 100 mark. (AP Photo/Chicago Zoological Society, Jim Schulz)

  • In this Thursday, June 28, 2012 photo provided by the Chicago Zoological Society, Honey, a 2-year-old American Guinea hog at the Brookfield Zoo in Brookfield, Ill., cools off in a pool of water as temperatures hovered near the 100 mark. (AP Photo/Chicago Zoological Society, Jim Schulz)

  • A six day-old and yet unnamed seal cub lies next to its mother Inga in their compound in the zoo of Augsburg, southern Germany, Thursday, June 28, 2012. (AP Photo/dapd, Annette Zoepf)

  • This image provided by the San Diego Zoo shows Sumatran tiger cubs, Conrad, right, and Thomas, lower left, napping on their mother, Delta, Tuesday June 26, 2012 in San Diego. The 3-month-old male cubs made their public debut on Tuesday. There are fewer than 350 Sumatran tigers in the wild. Scientists estimate that this species could be extinct in its native Sumatra by 2020. (AP Photo/San Diego Zoo, Tammy Spratt))

  • A baby beluga whale swims close to her 11 year old mother called Parara at the Hakkeijima Sea Paradise aquarium in Yokohama in suburban Tokyo on June 30, 2012. The one a half meters in length baby beluga was born at the aquarium on June 28. AFP PHOTO / Yoshikazu TSUNO

  • A man takes a photo of a one week old lion cub making the first public appearance at a zoo in the southern Russian city of Stavropol, on June 29, 2012. The twin lion cubs were born at the Stavropol zoo a week ago. AFP PHOTO / DANIL SEMYONOV

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