Joining the likes of killer whales (Orcinus orca) and bottlenose dolphins (Tursiops truncatus), plus a number of primates, a common dark-furred mouse has passed what’s known as the mirror test, backed ...

The mirror test—sometimes called the mark test, mirror self-recognition (MSR) test, red spot technique, or rouge test—is a behavioral technique developed in 1970 by American psychologist Gordon Gallup ...