Puppy?

“But it did not all happen in a day, this giving over of himself, body and soul, to the man-animals. He could not immediately forego his wild heritage and his memories of the Wild. There were days when he crept to the edge of the forest and stood and listened to something calling him far and away.”

Vicious WWII War Dog

Smoky the Yorky was found in a foxhole by an American solider during the war … She became a wartime sensation, backpacking through the New Guinea jungle and visiting injured soldiers to become one of the first therapy dogs.
Wynne found her exceptionally easy to train and she was soon aiding in the war effort, including an assignment to help string communication lines between outposts in the Philippines.

Huffington Post

Blakely

Blakely the rescue pup shows baby cheetahs, wallabies, foxes and the occasional warthog how to play and socialize like other animals. The Cincinnati Zoo.