A Bengal Tiger named Akasha dives into the water after a piece of meat at Six Flags Discovery Kingdom on June 20, 2012 in Vallejo, California. (Photo by Justin Sullivan/Getty Images)

Members of the Texas National Guard run from a charging calf while searching a field for remnants of Columbia on February 4, 2003 in Bronson, Texas. (Photo by Ronald Martinez/Getty Images)

A close-up view of a brown marmorated stink bug. (Photo by Sam Droege/USGS Bee Inventory and Monitoring Lab/MCT)

A friendly squirrel eats peanuts from a tourist at a park in New York of the United States, June 12, 2013. (Photo by Caters News)

This image provided by the Los Angeles County Sheriff's Department shows an alligator Thursday June 6, 2013 in Lancaster, Calif. Part of the “Zoo to You” program in Paso Robles that introduces kids to animals, the alligator was being held by two females near a van after the animal urinated inside the van and the females had stopped to clean the the van. (Photo by AP Photo/ Los Angeles County Sheriff's Department)

Baby gorilla Jengo plays with grandmother Viringika at the zoo in Leipzig, Germany, Thursday, March 20, 2014. (Photo by Jens Meyer/AP Photo)

Baby gorilla Jengo relaxes on the back of his mother Kibara at the zoo in Leipzig, Germany, Thursday, March 20, 2014. The baby gorilla was born on Dec. 2, 2013. (Photo by Jens Meyer/AP Photo)

When he was first discovered this baby platypus was severely underweight, however, following a daily diet of worms and crayfish Wally, as he has been christened, has doubled in size. The male youngster was discovered injured and close to death near Mt Warning in New South Wales and has been nursed back to health by rangers at the David Fleay Wildlife Park. (Photo by Luke Marsden/Rex Features/SIPA Press)

A handout photo obtained from CSIRO on March 21, 2014 shows a Queensland fruit fly with a 1.5-millimetre sensor attached to its back. Scientists have hit on a new way to combat one of Australia's worst pests – create a male-only line. The eight millimetre-long Queensland fruit fly is so prevalent and adept at destroying crops it is threatening the nation's 6.2 billion USD (6.9 billion AUSD) horticultural industry. Australian scientists at the government-run Commonwealth Scientific and Industrial Research Organisation are now exploring how feeding certain genes to larvae can alter the DNA so the flies grow into sterilised males whether they start out as male or female. (Photo by AFP Photo/CSIRO)

A newborn tamandua baby is alive and doing well at Denver Zoo thanks to the dedication of zookeepers and veterinarians as the baby's mother learns her new role. Southern tamandua Rio gave birth to her first offspring on March 7, 2014. Zookeepers believe the baby is female and named her “Cayenne”. (Photo by Charlotte Bassin/Denver Zoo)

This hippo appears to have got out the wrong side of bed as he yawns to show his giant teeth during a morning swim in the Kruger National Park in South Africa. (Photo by Mario Moreno/Solent News & Photo Agency)

These elephants made up for the fact they can't hold hands – by winding their trunks together in a show of friendship. (Photo by Jagdeep Rajput/Solent News & Photo Agency)

Huddled together with their arms around one another, these little monkeys look more than happy to pose for the camera. (Photo by Caters News)

This is the incredible moment a friendly dolphin planted an affectionate kiss on a lucky diver. (Photo by Caters News)

A cheeky dragonfly lands on the head of a unsuspecting frog. The odd couple were spotted by amateur photographer Adhi Prayoga, in a small river running past his garden in Indonesia. (Photo by Adhi Prayoga/Caters News)

Photographer Jim Zielinski from Florida, USA, captured this hilarious moment when a squirrel spied a tasty treat inside a novelty horse's head bird feeder in his back garden. (Photo by Jim Zielinski/Caters News)

A cat enjoys a comforting back massage from a young crab-eating macaque. The display of friendship was caught on camera by Hendy Mp, 25, at his friend's home in Indonesia. (Photo by Hendy Mp/Solent News/SIPA Press)

This friendly grasshopper looks like he's just scaled Everest as he climbs to the top of a leaf.The tiny insect appears to wave in triumph after getting to the summit of a large hibiscus tree leaf. (Photo by Solent News)