Author: Jimena Gonzalez Ponce
Have you ever heard that a dolphin's brain is as big as a human’s brain? They need big brains because of something called echolocation; this is what scientists have discovered. We always knew that whales and dolphins showed intelligence, but new research is revealing how little we really know. They're more like us than you might have suspected, yet at the same time, they have also evolved to be perfectly adapted for their marine home. Sure, this can be quite a coincidence, but also it is entirely possible that a dolphin can mimic a person/human. This is because dolphins are one of the smartest animal species on earth. Exactly how smart are dolphins? Dolphins belong to the group of aquatic mammals known as cetaceans who comprise 86 different species and share a common link with angulates, or hoofed animals. Dolphins are also one of the species who passed the mirror test. By recognizing themselves in mirrors, they indicate physical self awareness and research shows they can recognize not just their bodies, but also their own thoughts, a property called metacognition.
If you’re wondering how smart an animal is you should see how smart a dolphin is. A dolphin is one of the smartest animals on the planet. Another thing is that dolphins are carnivores. Are you wondering what they eat? Well, they eat fishes like Herring, Cod or Mackerel. Some others eat squids or other cephalopods. Dolphins don't need to drink water like we do. There main prey (fish and squid) contains large amounts of water and so dolphins gain water from their food. In addition, dolphins don't actually need to take in very much fluid because unlike us, they don’t lose water by sweating. The biggest cetacean is the Killer Whale. Killer Whale calves are about eight feet long at birth and can grow to be over 20 feet long. Bottlenose Dolphins are about 3 ½ feet long at birth and grow to 8 or 9 feet long.