See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Before squaring up for a fight, some fish check themselves out in the ...

Mirror Self-Recognition (MSR) is seen as evidence for self-awareness and passing the mark test, in which animals touch or scrape a mark placed on their body in a location that can only be indirectly ...

Researchers address criticisms to previous work by providing additional evidence to suggest the cleaner fish Labroides dimidiatus has Mirror Self-Recognition. Mirror Self-Recognition (MSR) is seen as ...

A shrimp scrap drifted down the face of a mirror, and a small reef fish tracked it like it was watching a slow-motion experiment. The fish, a blue-streak cleaner wrasse, had carried the shrimp upward, ...

A species of fish, the cleaner wrasse (Labroides dimidiatus), responds to its reflection and attempts to remove marks on its body during the mirror test—a method held as the gold standard for ...

Online videos of children doing things they are not supposed to when a parent looks away often rack up views and shares. But do other animals also behave themselves better when they know someone’s ...