A new study revealed that beluga whales can recognize themselves in a mirror. Here, a female beluga and her calf swim in the ...

For humans, recognizing our reflection comes naturally, and we barely give it a second thought. Called mirror self-recognition (MSR), it is widely considered a sign of self-awareness and cognitive ...

Cleaner wrasse have revealed a remarkable new side of fish intelligence. Marked with fake parasites, they used mirrors to inspect and remove the spots—far faster than seen in earlier tests. Even more ...