WEB6 days ago · dolphin, any of the toothed whales belonging to the mammal family Delphinidae (oceanic dolphins) as well as the families Platanistidae and Iniidae, the two that contain the river dolphins. Of the nearly 40 species of dolphins in the Delphinidae, 6 are commonly called whales, including the killer whale and the pilot whales.
WEBA dolphin is an aquatic mammal within the infraorder Cetacea. Dolphin species belong to the families Delphinidae (the oceanic dolphins), Platanistidae (the Indian river dolphins), Iniidae (the New World river dolphins), Pontoporiidae (the brackish dolphins), and possibly extinct Lipotidae (baiji or Chinese river dolphin).
WEBLiving in pods that can number a dozen or more, dolphins are intensely social mammals that communicate with squeaks, whistles, and clicks. Whether dolphins have language, as humans do, is a topic ...
WEBDec 13, 2019 · Laura Klappenbach. Updated on December 13, 2019. Dolphins ( Odontoceti) are a group of 44 species of toothed whales or cetaceans. There are dolphins in every ocean on Earth, and there are freshwater species of dolphins that inhabit rivers in South Asian and South American.
WEBAll dolphins have conical-shaped teeth. A Risso's dolphin has 14 while a spinner dolphin can have 240. The orca (killer whale) is the largest dolphin. Hector's dolphin and Franciscana are two of the smallest. The five river dolphin species inhabit the large waterways of Asia and South America.
WEBAug 4, 2020 · Dolphins vary in size and weight depending on species. The largest dolphin is the killer whale ( Oscines Orca ), which can be up to 23 feet long and weigh up to 4.5 tons. The smallest dolphin is ...