A hippopotamus has a shower in its enclosure at the Skopje zoo in Macedonia. A heat wave has swept across Macedonia with temperatures reaching up to 40 degrees Celsius (104 degrees Fahrenheit)  Picture: EPA

A hippopotamus has a shower in its enclosure at the Skopje zoo in Macedonia. A heat wave has swept across Macedonia with temperatures reaching up to 40 degrees Celsius (104 degrees Fahrenheit)  Picture: EPA

Pelican by Andi Gebhardt

Pelican by Andi Gebhardt

Indian Gazelle also known in India as Chinkara. Photographed at Ranthambore, India by sfbaydawg

Indian Gazelle also known in India as Chinkara. Photographed at Ranthambore, India by sfbaydawg

A lion trying to balance up a tree in Ndutu, Tanzania | Photograph taken by Amy Johnson

A lion trying to balance up a tree in Ndutu, Tanzania | Photograph taken by Amy Johnson

by: biscuitandbuddy
By thishitgetsold
Zebras nuzzle up to each other at the Beijing Zoo in Beijing, China  Picture: EPA  

Zebras nuzzle up to each other at the Beijing Zoo in Beijing, China  Picture: EPA  

by: jacobscottkramer
White Tiger by Jai

White Tiger by Jai

Submitted by: jayleighphotography

Submitted by: jayleighphotography

Trailblazin’ by millivedderphotography | Facebook

Trailblazin’ by millivedderphotography | Facebook

A ring-tailed Lemur sits on a photographer’s shoulder before the animals are weighed at Whipsnade Zoo  Picture: PA

A ring-tailed Lemur sits on a photographer’s shoulder before the animals are weighed at Whipsnade Zoo  Picture: PA

Submission by: annadira 

Submission by: annadira 

Boiling Toad taken by dorothy-louise.

Boiling Toad taken by dorothy-louise.

Komala, the 8 week old baby Greater One Horned Rhino, the first to be born at Chester Zoo in its 80 year history, takes her first steps outside  Picture: PA

Komala, the 8 week old baby Greater One Horned Rhino, the first to be born at Chester Zoo in its 80 year history, takes her first steps outside  Picture: PA