Winston—the Oldest Breeding Male Gorilla in the U.S.—Gets a Comprehensive Heart Exam at the San Diego Zoo Safari Park | San Diego Zoo Wildlife Alliance https://sandiegozoowildlifealliance.org/story-hub/2017/11/14/winston-the-oldest-breeding-male-gorilla-in-the-us-gets-a-comprehensive-heart
of the habitat watching the other gorillas, especially the young males, to make sure