Hippo.. I think the hippo are the best animals in the word because they are very quiet. Although they are very big, they can run very very fast. These animals are similar to the pigs, but in fact, they are from the whale family. Usually, they pass the day in the river, because they want to be cold, and in the river, they don´t have conflicts with other animals. Another thing that it surprises me, is the fact that hippo are herbivorous, I have always thought that animals so big are carnivores! And then the people say that to eat vegetables is better for slim down, for hippo is not! ;-) Anyway, the hippo can be very very dangerous when they feel they are in danger, and open their very big mouth! So, it will be better not to stay near their never. thanks!