The gorillas were a bit boring weren't they? Must have been having an off-day 😂 I think Haoko is the biggest silverback I know. He has a handsome brother, Shabani, at Higashiyama zoo. Apparently women would go mad for him, calling his name and trying to get his attention. Here's some action from Haoko and his son, Riki (about five or six now, I think):

Haoko and Riki

Shabani drumming

I don't know how those animals cope with the noise, all those excited children!