For decades, scientists used a mirror experiment to explore whether animals could recognize themselves. In that test, ...

In theory, a reaction to an out-of-place mark in a reflection is assumed to be evidence of self-recognition for other animals ...

This small fish shows self-awareness like apes.

People are eating more and more fish. To meet rising demand, fish are increasingly being cultivated in fish farms. Aquaculture is the fastest-developing branch of the global food industry, with annual ...