I’ve been sketching and working on a few Chimpanzee studies, getting the overall form and mass in the 4 foot tall primates. Their structure has similarities to that of humans. Yet, physically more stronger than we are.
I remember when I studied Animation at The Art Institute one of my Professors gave this analogy that a full grown 200lb Chimp can rip 50cents arms off with easy while standing still, that’s how much strength they have.