Dolphins are not smarter than orcas since orcas have a highly developed brain structure and the second-largest brain among animals. However, we must mention here that orcas belong to the dolphin family and display numerous characteristics similar to other dolphins, so their intelligence comes as no surprise. Besides orcas, bottlenose dolphins are considered to be very smart.

All dolphins are carnivores, with fish making up the majority of their diet. While some dolphins do eat other sea creatures, such as crustaceans and cephalopods, fish make up the largest portion of the dolphin’s diet.

Dolphins drink milk, much like whales and humans. They are not equipped to hunt for themselves soon after being born like sharks are and, therefore, rely on their mothers to supply them with the required nutrition. Dolphins do not consume any solid food for 2 to 3 years after being born and are solely dependent on the milk their mother produces.