Some of the animal photos from a collection of emotionally powerful photos:
A dog named Leao keeps watch by the the grave of his owner who was killed in a landslide in Rio de Janeiro.
A firefighter gives water to a koala during the devastating Black Saturday bushfires that burned across Victoria, Australia, in 2009.
A girl in isolation for radiation screening looks at her dog through a window in Nihonmatsu, Japan.
Greg Cook hugs his dog Coco after finding her inside his destroyed home in Alabama following the Tornado in March, 2012.