Wondernose: What animal has teeth like triangular bread knives?

Wondernose: What animal has teeth like triangular bread knives?

Bull shark. Photo © Willyambradberry/Dreamstime.com. Sounds like the kind of teeth you’d like to avoid, doesn’t it, ? Triangular, razor-sharp, with serrated edges—teeth like that should be quite effective.Fact is, these animals have been known to attack people, or any...