The Kratt Brothers are always ready for an adventure — especially when they visit the eastern United States to learn about the American bullfrog. Let the learning leap from the screen and into your ...

Understand that all animals have a life cycle that includes being born, developing into an adult, reproducing, and eventually dying Understand that the details of life cycles vary from one organism to ...

With over 7,000 known species, frogs display a stunning array of forms and behaviors. A single gram of the toxin produced by the skin of the golden poison dart frog can kill 100,000 people. Male ...