The Colorado River toad is also known as the Sonoran Desert toad. It is the largest native toad in the United States, measuring 3-6 inches in length. It is olive green to brown in color and has a cream colored belly. Its back is covered in warts along with one or two warts by its mouth.
This is a smaller species of salamander and is largely noted for their bright coloration. They are black and yellow, sometimes orange. They have large and active parotid glands behind their heads. Their average size is 4-10 inches and they weigh on average 2 oz.
Giant Marine Toads have surely earned their name, weighing in on average at 2 pounds and the largest being recorded at 16 inches long! Like most toads, hey have large parotid glands behind their eyes that can secrete a toxin if threatened.
Tiger Salamanders have a pattern which is unique to salamander, but there’s no doubt where this amphibian gets its name. Resembling a tiger, this animal has black and yellow stripes down its body. They are the largest land salamander and average 4oz and can be 14 inches.