Researchers have finally traced the origin of the spotted ratfish’s bizarre forehead teeth, which are used for mating

It’s tough out there for male spiders. The sexual dimorphism is so extreme in many species that courtship frequently ends in death when they become a mate’s post-coital snack. However, arachnologists...

A humpback whale appeared to swallow then spit out a kayaker in a viral video filmed off the coast of Chile. But was he actually in any danger?

The smallest species of whale tricks its predators by gushing red gallons of red fluid into the water when under attack