What role does a hippo have in a ecosystem?

In chapter 19 in The Sign of the Beaver what is Matt interested in watching? What does it mean when your guinea pigs ear twitches? How many eggs do dogs produce? Do cats ever resemble there mother? What is it when you do somthing with your ears without touching them and you hear rumbling and you can control it? Harp Seals Special body Features plus Adaptations? Will thay eat any tipe of fish food? When does the herd of buffalo choose a knew leader? How do you change pull cord on john deere js20 push mower? You are getting moths in your kitchen very large moths what causes them how do you get rid of them? Can white ferrets see? Do dogs like it when you baby talk them? When will the last world war 2 veteran die? What does it mean when squirrels lay down flat on their bellies? How much is 6 grams? How many horses are in Massachusetts? How much growing does a 16 week old kitten have until fully grown? How does white tigers camouflage? How many tourist visit Budapest each year? What animals are related to jackals?