UNITED NEWS INTERNATIONAL (UNI) — A new study reveals dolphins may be even smarter than we thought.

Researchers recently discovered that the marine mammals can recognize themselves in a mirror at just seven months old.

That’s even earlier than humans can.

Children, by comparison, begin displaying signs of self-recognition at about a year old at the youngest.

Mirror self-recognition is often seen as an indicator of a species’s self-awareness and level of intelligence.

Research has also shown it to be a sign of sensory and motor development.

Apart from dolphins, only a handful of other animals have shown self-directed behavior at a mirror, including great apes, elephants and magpies.

One of the author’s of the study, which was published Jan. 10 In the journal Plos One, said the findings provide new insight into the quote “evolution of intelligence in the animal world.”