A dolphin is a (marine) mammal. I could see why you may have thought amphibian, however an amphibian is more of a frog/lizard species.
Dolphins are mammals.
fish and amphibians and even a couple of mammals because dolphins are mammals not fishes
Mammals. Dolphins have lungs. Fish have gills. Dolphins have mammary glands, making them mammals.
Fish, and then amphibians, and then reptiles, and then mammals
Dolphins are classified as mammals.
Dolphins are mammals, not amphibians, as amphibians need to be able to come onto land to breathe normally, and lay eggs. Dolphins will die on land, and don't lay eggs, just give birth in the water.
no. they are mammals.
Dolphins eat fish.
1:fish 2: amphibians 3: reptiles 4: birds 5: mammals
Sharks are not amphibians, mammals, or reptiles. They are a type of fish known as cartilaginous fish, as their skeletons are made of cartilage instead of bone.
Elk are mammals.
Dolphins are not fish, they are mammals.