Some people think it is a mixture of the geological features in the area. But in general, most animals are afraid of humans and run away. Peccaries and pigs diverged from a common ancester about 110 million years ago. They belong to separate familes. Peccaries are from North and South America.
Pigs are from the more old world area.
There are three types of peccaries. The Chaco peccaries face alot of hunting. They are wide ranging. In the field of freshwater ecology,most of the invertebrates we sampled were undescribed species. It's possible we'll find some new species of fish.