One of the largest species of freshwater turtle, the females can weigh up to 100 pounds. Like sea turtles, they return to lay eggs on the same sandbank every year. The females can lay over 100 eggs at a time in their nests.
Ursus arctos horribilis The grizzly bear has a stable and sustainable population in the North American wild. However, among the many factors affecting their…
Crotalus atrox They feed mainly on rodents and will keep their numbers in check. Rattlesnake roundups have reduced their numbers significantly in many parts…
Pygocentrus nattereri Fulfilling the role of the vulture, schools of piranha keep the river clean by consuming dead or injured animals, insects, snails, scraps…