This week saw several heartwarming baby animal rescues. In Spain, a photographer captured a mother elephant saving her month-old calf from the mud. In Australia, an orphaned baby koala was returned to the wild after he was nursed back to health at an animal hospital. Crescent Head Jimmy had been brought to the hospital after his mother was killed by a car in 2009.

It was revealed this week that climate change and decreasing snow cover could have an impact on wolverines' eating habits. LiveScience reports that according to researchers, "wolverines use snow like a refrigerator to preserve food during the lean, cold times after their young are born."

This week also saw good news for fans of Bob Marley. A parasitic crustacean found only in the Caribbean has been named Gnathia marleyi in honor of the late musician. Paul Sikkel, an assistant professor of marine ecology at Arkansas State University, said in a statement, "I named this species, which is truly a natural wonder, after Marley because of my respect and admiration for Marley's music." He added, "Plus, this species is as uniquely Caribbean as was Marley."

Sadly, it was revealed that over 500 dead penguins have washed up on beaches in southern Brazil in the past week. Marine biologists and veterinarians expect to know the cause of death in about a month, reported AP.

If you had a hot week, be sure to check out these pictures of dogs cooling off in the water.

Below, find some of the week's best animal photos from around the world.

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  • A baby gorilla lays on its mother Rebecca on July 12, 2012 at the zoo in Frankfurt/M., western Germany. The gender of the animal, born on July 10, 2012 and still nameless, is not yet known. AFP PHOTO / FREDRIK VON ERICHSEN

  • BERLIN, GERMANY - JULY 13: A twin baby panther emerges from its basket while being presented to the media with its sibling at Tierpark Berlin zoo on July 13, 2012 in Berlin, Germany. The two panthers were born in captivity on April 26. (Photo by Sean Gallup/Getty Images)

  • A Syrian brown bear bites in a block of flavored ice handed by zoo keepers at the Israeli zoo of Ramat Gan, north of the Mediterranean coastal city of Tel Aviv, as temperatures reached 34 degrees Celsius on July 12, 2012. AFP PHOTO/JACK GUEZ

  • A female lion cub lays around at the Jacksonville Zoo on Tuesday, July 10, 2012, in Jacksonville, Fla. The cub, born on June 30, appears to be healthy and strong, despite the fact that Tamu, the mother, is not nursing the cub adequately. The staff has been supplementing the cub's diet with bottle-fed formula. The father of the cub, Mshoni, is one of the most genetically valuable lions in the Association of Zoos and Aquariums' population. This is first surviving lion birth at Jacksonville Zoo since 1974. (AP Photo/The Florida Times-Union, Bob Mack)

  • This photo taken through a pane of glass shows a newborn red vari lemur with his mother at the zoo in Wuppertal, Germany, Thursday, July 12, 2012. The lemurs originate from Madagascar and this is the first time babies have been born in this zoo. (AP Photo/Frank Augstein)

  • A three day old baby gorilla sits in the arms of its mother Rebecca in Frankfurt Zoo, Germany, Friday, July 13, 2012. The gender and name of the Low Highland Gorilla baby are still unknown. (AP Photo/Michael Probst)

  • BERLIN, GERMANY - JULY 13: Twin baby panthers Remaong and Ferra cling to a tree while being presented to the media at Tierpark Berlin zoo on July 13, 2012 in Berlin, Germany. The two panthers were born in captivity on April 26. (Photo by Sean Gallup/Getty Images)

  • An African lion, the first passenger of a new flight that connects Italy with Nicaragua on its first direct link with Europe, is seen in his new dwelling at Managua's Zoo on July 13, 2012. The lion came as part of an exchange agreement between the Hauptstadt Zoo in Berlin and Nicaragua. AFP PHOTO/Nicolas GARCIA

  • Zebras eat at the Zoo in Wuppertal, Germany, Thursday, July 12, 2012. (AP Photo/Frank Augstein)

  • A turtle at Tegucigalpa's zoo, on July 12, 2012. AFP PHOTO/Orlando SIERRA

  • ALABASTER, AL - JULY 12: Hundreds of dog-loving residents attend the Beneful Dream Dog Park unveil event at Veterans Park on July 12, 2012 in Alabaster, Alabama. The newly renovated dog park features an array of fun elements including: custom-designed doggie splash pads for cooling off on hot summer days; a fetch football field; a hill that dogs and owners can climb together; a doggie wash station; and an adventure path with tunnels and agility hoops. (Photo by Skip Bolen/Getty Images for Beneful)

  • A five and half year-old rhino stands with her four day-old calf at an enclosure at the Nehru Zoological park in Hyderabad, India, Monday, July 9, 2012. (AP Photo/Mahesh Kumar A.)

  • A Syrian brown bear eats an ice block of frozen fruits, vegetables and fish to cool off from the heat at the Ramat Gan Safari near Tel Aviv, Israel, Thursday, July 12, 2012. Temperatures in Tel Aviv reached as high as 34 Celsius (93.2 Fahrenheit). (AP Photo/Ariel Schalit)

  • An elephant named ''Horas'' is pictured at the zoo in Kiev, on July 14, 2012. The seven-year-old Asian elephant was brought to the zoo a month ago and was officially presented to the public today. AFP PHOTO/GENYA SAVILOV

  • A group of iguanas sunbathe at Managua's Zoo on July 13, 2012. AFP PHOTO / Nicolas GARCIA

  • A parrot at Tegucigalpa's zoo, on July 12, 2012. AFP PHOTO/Orlando SIERRA

  • A jaguar at Tegucigalpa's zoo, on July 12, 2012. AFP PHOTO/Orlando SIERRA

  • A peacock at Tegucigalpa's zoo, on July 12, 2012. AFP PHOTO/Orlando SIERRA

  • Monkeys at Tegucigalpa's zoo, on July 12, 2012. AFP PHOTO/Orlando SIERRA

  • A dog cools down in a fountain at Syntagma square, in central Athens on Friday July 13, 2012. Municipal authorities are on alert in Greek cities, amid heat wave temperatures this week and next, set to reach 42 degrees Celsius (107.5 degrees Fahrenheit). (AP Photo/Dimitri Messinis)

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