history: I always wanted to see a hippopotamus. Can you tell me anything about them?
knowledge: The common hippopotamus (''Hippopotamus amphibius''), or hippo, is a large, mostly herbivorous, semiaquatic mammal native to sub-Saharan Africa, and one of only two extant species in the family Hippopotamidae, the other being the pygmy hippopotamus (''Choeropsis liberiensis'' or ''Hexaprotodon liberiensis'').
response: Sure! The hippo is a larger herbivore mammal and there are only two species in existence!
history: I always wanted to see a hippopotamus. Can you tell me anything about them?
Sure! The hippo is a larger herbivore mammal and there are only two species in existence!
Wow they remind me a lot of cows. I wonder if they are related.
knowledge: The name comes from the ancient Greek for ''river horse'' ().
response: It's a mystery to me, though the name is based on the ancient Greek phrase "river horse".
history: I always wanted to see a hippopotamus. Can you tell me anything about them?
Sure! The hippo is a larger herbivore mammal and there are only two species in existence!
Wow they remind me a lot of cows. I wonder if they are related.
It's a mystery to me, though the name is based on the ancient Greek phrase "river horse".
They sure seem to enjoy being in the water so that name makes sense to me!
knowledge: After the elephant and rhinoceros, the common hippopotamus is the third-largest type of land mammal and the heaviest extant artiodactyl.
response: Also, did you know they're third-largest land mammal? Only elephants and rhinos are bigger.
history: I always wanted to see a hippopotamus. Can you tell me anything about them?
Sure! The hippo is a larger herbivore mammal and there are only two species in existence!
Wow they remind me a lot of cows. I wonder if they are related.
It's a mystery to me, though the name is based on the ancient Greek phrase "river horse".
They sure seem to enjoy being in the water so that name makes sense to me!
Also, did you know they're third-largest land mammal? Only elephants and rhinos are bigger.
No kidding, I had no idea they were that large. I think they look really cute with the teeth sticking out of their mouths.
knowledge: Despite their physical resemblance to pigs and other terrestrial even-toed ungulates, the closest living relatives of the Hippopotamidae are cetaceans (whales, dolphins, porpoises, etc.)
response: True, although they look similar to pigs, their closest relatives are whales and dolphins