Foto: Reinaldo Carvalho

Foto: Reinaldo Carvalho

A chimpanzee at San Francisco Zoo that is deep in thought. Photograph by sfbaydawg.

A chimpanzee at San Francisco Zoo that is deep in thought. Photograph by sfbaydawg.

Female giant panda Yuan Yuan is photographed for the first time holding her female cub at the Taipei Zoo in Taipei, Taiwan  Picture: AP

Female giant panda Yuan Yuan is photographed for the first time holding her female cub at the Taipei Zoo in Taipei, Taiwan  Picture: AP

Submission by: nina—beans

Submission by: nina—beans

by: island-imagination
by: annadira 

by: annadira 

Prairie Dogs, St. Louis Zoo. 

Prairie Dogs, St. Louis Zoo. 

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