The animal kingdom can get pretty weird when it comes to sex and relationships. Different creatures have evolved all sorts of methods to pass on their genes to the next generation and beat out ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. For any animal, releasing sperm cells requires a bit of time and ...

A new study of the genetic profiles of wild and hatchery coho salmon demonstrates important distinctions in how the two types of fish form mating pairs. A new study of the genetic profiles of wild and ...

The more we learn about the animals we share the planet with, the more we realize how fascinating their behavior can be. In 1995, divers off the coast of Japan discovered intricate crop circles ...

Q. Can different species of trout successfully mate? A. Yes, although it is very uncommon, some species of trout have been observed reproducing with other species of trout, which scientists refer to ...

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

(CNN) — Scientists studying squaretail grouper have found that the increasing presence of fishermen in the water is changing their behavior from flirty to flighty. A team led by scientists at ...

New findings call into question one of the core assumptions about teeth. Adult male spotted ratfish, a shark-like species native to the eastern Pacific Ocean, have rows of teeth on top of their heads, ...