A dog jumps into a pool during a dog diving competition at the 2018 Dog and Cat trade fair at Leipziger Messe on August 26, 2018, in Leipzig, Germany. #

Children play with a dog in a fountain at sunset in August of 2016. #

A dog jumps into a pool during the 2018 Dog and Cat trade fair in Leipzig, Germany, on August 26, 2018. #

A dog swims with a ball at the 2018 Dog and Cat trade fair in Leipzig, Germany, on August 26, 2018. #

A dog rides a wave during the Surf City Surf Dog competition in Huntington Beach, California, on September 25, 2016. #

Two dogs wipe out during the Surf City Surf Dog competition in Huntington Beach on September 25, 2016. #

A border collie and an Australian kelpie play in a mountain lake. #

A dog swims underwater during a water therapy session in Istanbul, Turkey, on June 30, 2019. #

A competitor cools down after completing a round during the International Sheepdog Trials on September 9, 2018, in Dromore, Northern Ireland. #

A dog shakes off after enjoying a river swim on an early morning walk in St. Fagans, Cardiff, Wales, on April 5, 2020. #

A dog swims in the Red Sea, off the coast of Egypt, near Dahab. #

An underwater view of a dog playing with a toy in Thailand #

Titti the diving dog launches herself off a clifftop into the waters of St Peter's Pool in Malta on July 30, 2015. #

A man hugs his dog during the 14th annual Helen Woodward Animal Center "Surf-A-Thon" in Del Mar, California, on September 8, 2019. #

Dudley the German shepherd tries to catch a toy during the Splash Dogs competition heats at America's Family Pet Expo in Costa Mesa, California, on April 28, 2018. #

Parafina Martins competes in the 2019 Surf City Surf Dog contest on September 28, 2019, in Huntington Beach, California. #

A golden retriever leaps into a lake in a Russian forest. #

A dog swims through a field of water lilies at Lake Schwarzsee in Kitzbuehel, Austria, on June 19, 2011. #

Miumiu bites a toy while playing in a swimming pool at Cute Beast Pet Resort in Beijing, China, on December 22, 2017. #

On July 13, 2003, Bambi, a 5-year-old Labrador-greyhound mix, beat the heat by charging sprinklers in a dog run at Centennial Hills Park in Las Vegas, Nevada. #