Chimpanzees are some of the smartest animals on the planet. However, chimpanzees can be very aggressive as well. As they ...

Modern-day gorillas have much larger canine teeth than humans, and we can actively observe how they use them to compete with one another for mating rights with a female. Generally, the male with the ...

The pig’s mouth revealed its ordinary sharp, tusk-like canines saddled up beside smaller, slightly more human-looking teeth nubs. In theory, a similar process could play out in humans.