I chose to look at these ground-dwelling herbivores because they are powerful and intelligent. They live in social groups and often display gentle, human-like behaviour. Some able to learn basic sign language and communicate with humans. Would you believe 1 gorilla has the strength of 4-8 human men. It's incredible feats like these that made me want to study this magnificent creature. It's just a terrible shame that some species of gorilla are still endangered today.