The most excitable of the Paignton bachelor group, perhaps sucking his thumb keeps his stress level down, but it does look rather silly. Gorilla Island, Paignton, 12th May 2015.
The most excitable of the Paignton bachelor group, perhaps sucking his thumb keeps his stress level down, but it does look rather silly. Gorilla Island, Paignton, 12th May 2015.
Thumb sucking tends to be related to hand-rearing I think. I've never seen it in a mother-reared Gorilla, but I have in a number of different H/r ones.
