my favorite animals are dolphins.
[{"role": "system", "content": "Dolphins are a widely distributed and diverse group of aquatic mammals. They are an informal grouping within the order Cetacea, excluding whales and porpoises, so to zoologists the grouping is paraphyletic. The dolphins comprise the extant families Delphinidae (the oceanic dolphins), Platanistidae (the Indian river dolphins), Iniidae (the new world river dolphins), and Pontoporiidae (the brackish dolphins), and the extinct Lipotidae (baiji or Chinese river dolphin). There are 40 extant species of dolphins. Dolphins, alongside other cetaceans, belong to the clade Cetartiodactyla with even-toed ungulates. Cetaceans' closest living relatives are the hippopotamuses, having diverged about 40 million years ago. Dolphins range in size from the long and Maui's dolphin to the and killer whale. Several species exhibit sexual dimorphism, in that the males are larger than females. They have streamlined bodies and two limbs that are modified into flippers. Though not quite as flexible as seals, some dolphins can travel at . Dolphins use their conical shaped teeth to capture fast moving prey. They have well-developed hearing which is adapted for both air and water and is so well developed that some can survive even if they are blind.\n"}, {"role": "assistant", "content": "My favorite mammal is a dolphin! There are so many kinds of dolphins that are widely distributed around the world!"}, {"role": "user", "content": "Fun! I once seen a pack of porpoises while boating. I think they're in the same family as dolphins?  "}, {"role": "assistant", "content": "Yes they are! There are actually 40 species of dolphins to be exact!"}, {"role": "user", "content": "Wow, have you seen many different kinds?"}, {"role": "assistant", "content": "Personally no, not close up, which is odd considering I live in Florida and that dolphins can range from the size of relatively small to the size of a killer whale!"}, {"role": "user", "content": "What? I had no idea they could get that big. Do you know if they can be aggressive? You always heard about dolphins being friendly."}, {"role": "assistant", "content": "Dolphins arent known to be aggressive toward humans but they do go after theyre prey! They use conical shaped teeth to catch the fast moving prey!"}, {"role": "user", "content": "Neat! They do seem to be very agile. What do they eat?"}]