Bullfrog (21st Century Skills Library: Animal Invaders)

Bullfrogs are big eaters, consuming almost anything that fits in their mouths. Meals include birds, turtles, snakes, and even other frogs. At one time, bullfrogs lived only in North America and east of the Rocky Mountains. Today, the large frogs have invaded many parts of the world, causing problems for native wildlife. Look inside to discover how bullfrogs became an invasive species and what is being done to help stop their spread. Looks at the characteristics of bullfrogs and examines how they became an invasive species in North America, how they cause problems in their new environments, and the ways that people have attempted to deal with them