sentence: The difference between the Short-beaked Common Dolphin and the Long-beaked Common Dolphin, is that the Short-beaked Common Dolphin is smaller in size and has a smaller beak than the Long-beaked Common Dolphin.
modified: fix grammar: The difference between the Short-beaked Common Dolphin and the Long-beaked Common Dolphin, am that the Short-beaked Common Dolphin is smaller in size and have a smaller beak than the Long-beaked Common Dolphin.