Scientists were baffled over how eels reproduced for thousands of years – leading to the belief they spontaneously spawned ...

Some animals are capable of parthenogenesis, a reproductive process in which females produce offspring without fertilization.

From spraying mates with urine to changing one's sex, these are the most intriguing courtships in the animal kingdom.

Sterilisation is often discussed in the context of preventing unwanted litters, but its effects on a pet’s body go far beyond reproduction. When dogs and cats are spayed or neutered, the removal of ...

Quick Take Lifespan Increases By 10% When Mammals A... When Reproduction Leads to Health Proble... Female Mammals Benefit More From Any For... Would Animals Benefit From Having Fewer ... When mammals ...

Here’s what you’ll learn when reading this story: Chondrichthyan fishes—a group that includes rays, skates, chimaeras, and sharks—are thought to have energy intensive reproduction cycles due in no ...