Only primates, humans, and opossums have opposable thumbs. Out of these, the opossum is the only one with no thumbnail.
100 Mind-Blowing Primates Facts
A silverback gorilla could deadlift 1,800 lbs. That’s 815 kg for you metric maniacs. To give you a better idea, the deadlift world record is just over 1,100 pounds (500kg). This should come as no real surprise, as gorillas are the largest primates in existence.