Reminds me of a story told by an Air Force collegue back inthe days when we were young and stupid (as opposed to old and stupid now )
Apparantly he jumped over an outer fence around the gorilla cage to get a good photo - took off the camera's cover (long time ago) and put it on the ground and then backed up to compose the shot. The gorilla then reached through the bars and grabs the cover about the same time as my collegue sees what the gorilla is doing. So collegue and gorrilla have a little "tug-o-war" over the cover.
Apparantly the tug-o-war didn't last long - his comment was $%*& those things are strong!