Are dolphins smart?
Yes, dolphins are among the most intelligent animals. They have large brains, solve problems, use tools, recognize themselves in mirrors and communicate using complex sounds.
Bottlenose dolphins have one of the largest brains relative to body size of any animal, second only to humans by some measures. In experiments, they have recognized themselves in mirrors, a rare sign of self-awareness. They can understand simple symbol-based languages and follow instructions given by trainers.
Each dolphin develops a signature whistle that works like a name. Dolphins call to each other using these whistles and can remember the whistles of former companions for more than 20 years. They live in social groups called pods and cooperate when hunting.
Tool use
In Shark Bay, Australia, some dolphins carry marine sponges on their beaks to protect them while searching the seafloor for food. Mothers teach this skill to their calves, mostly daughters, which scientists see as a form of culture passed between generations.
Did You Know?
Dolphins sleep with only half of their brain at a time, keeping one eye open, so they can keep breathing and watch for danger.