Even though chimpanzees are closely related to humans, these animals are much more dangerous than you think. They’re stronger than the average human, unpredictable, and have sharp teeth that could tear a person’s arm off their body with one swift bite. Their muscles are estimated to be four times stronger than human beings. The next time you see a chimpanzee and want to give it a brotherly hug, stop yourself. You may not make it out alive (via Best Life Online).