Biology blurs line between sexes, behaviors

Biological sex is typically understood in binary terms: male and female. However, there are many examples of animals that are able to modify sex-typical biological and behavioral features and even change sex. A new study, ...

Why do small dogs live longer than big dogs?

You don't necessarily need a working knowledge of evolutionary theory to know that in the animal kingdom, larger beasts tend to live longer than smaller ones.

Fish experience pain with 'striking similarity' to mammals

A new University of Liverpool study has concluded that the anglers' myth 'that fish don't feel pain' can be dispelled: fish do indeed feel pain, with a similarity to that experienced by mammals including humans.

How mantis shrimp make sense of the world

A study involving scientists at the University of Arizona and the University of Queensland provides new insight into how the small brains of mantis shrimp—fierce predators with keen vision that are among the fastest strikers ...

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