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Michael Phelps of the U.S. celebrates winning gold in the Men's 200m Butterfly Final on Day 4 of the Rio 2016 Olympic Games at the Olympic Aquatics Stadium on Aug. 9, 2016 in Rio de Janeiro, Brazil.

Michael Phelps Is Going to Race a Great White Shark

The race will air on Discovery in late July

The race will air on Discovery in late July

Nina, an 8-month old Mini Australian Shepherd photographed in New York, NY on April 18, 2017.

Inside the Minds of Dogs

These photographs reveal dogs' individual personalities

These photographs reveal dogs' individual personalities

The Google street view car in the streets of Brasilia, Brazil, on Sept. 6, 2011.

Google Street View Mocked For Blurring the Face of a Cow

Cow captured on Street View refuses to moo-ve out of the picture

Cow captured on Street View refuses to moo-ve out of the picture

Great white, False Bay, June 2012.

Shark Attack Leaves Australian Kitesurfer Dead

This was the fourth shark attack this year in New Caldonia

This was the fourth shark attack this year in New Caldonia

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This Housebroken 1,000-Pound Bison Is Looking for a Loving Home

In case you're looking for a new pet

In case you're looking for a new pet

A de-horned rhino slowly wakes up after his horn was trimmed at John Hume's Rhino Ranch in Klerksdorp, in the North Western Province of South Africa, Feb. 3, 2016

The Poaching of African Rhinos Continues to Rise at an 'Alarming' Rate

Poachers have killed at least 5,940 African rhinos since 2008

Poachers have killed at least 5,940 African rhinos since 2008

Sumatran tiger cubs and their parents walk around their enclosure at London Zoo, U.K., Jan. 5, 2015.

50 Astonishing Animal Photos of 2015

TIME looks back over the past 12 months and presents a selection of astonis...

TIME looks back over the past 12 months and presents a selection of astonishing animal images