Like human toddlers, great apes, magpies and dolphins, elephants have passed the mirror test, they recognize themselves in a mirror.
The mirror test, sometimes called the mark test or the mirror self-recognition test (MSR), is a behavioural technique developed in 1970 by psychologist Gordon Gallup Jr. as an attempt to determine whether a non-human animal possesses the ability of self-recognition.
As of 2016, only great apes (including humans), a single Asiatic elephant, dolphins, orcas, and the Eurasian magpie have passed the MSR test. A wide range of species have been reported to fail the test including several monkey species, giant pandas, sea lions, and dogs
