Anaxyrus boreas, commonly known as the western toad, is a species of toad found primarily in western North America. They inhabit a variety of environments, including forests, grasslands, and wetlands. These toads are characterized by their warty skin, which can vary in color from brown to green, and they typically grow to about 4 to 6 inches in length. Western toads are known for their distinctive mating calls, which can be heard during the breeding season in spring. They primarily feed on insects and other small invertebrates. Anaxyrus boreas plays an important role in its ecosystem by helping to control insect populations and serving as prey for larger animals, such as birds and snakes.