Question: @everyone why are dolphins so clever?

Sarwat Iqbal answered on 10 Mar 2015:

The research on dolphin intelligence is limited is because it’s difficult and expensive to do in the wild. Dolphins in captivity, may respond differently based on their surroundings and are therefore may not be representative of the wild dolphin.
We know that dolphins do communicate with each other and they’re one of the most playful animals in the universe, we’ve never been exposed to the intricacies of the dolphin’s brain. Consequently, you may be surprised to know that the dolphin brain is actually much larger than the human brain, however, their hemispheres are split into four lobes instead of three. The fourth lobe in the dolphin’s brain actually hosts all of the senses, whereas in a human, the senses are split. Some believe that having all of the senses in one lobe allow the dolphin to make immediate and often complicated judgments that are well beyond the scope of a human ability.