The salamander eats insects. In China and Japan, there are some 5 feet salamanders. A salamander weighs almost 50 pounds. Salamanders help keep insect population down and they become food for larger animals. Some ducks can dive 100 feet.
Wood ducks eat wild rice.
A duck's feathers have wax which keeps them dry and warm in the water. Ducks eat fish, water-lily acorns and insects. A duck's feet are webbed and they swim over 300 feet. When ducks come up for air they are dry. The leader of the ducks leads them.