The chipmunk is a small, striped member of the squirrel family. There are 25 species of chipmunk that range in size from the smallest least chipmunk to the largest eastern chipmunk.
Even the largest chipmunks aren’t all that big. The largest species of chipmunk is the eastern chipmunk. He only reaches 11 inches long, almost half of which is his tail. When he’s on his back legs, he’s only 5 or 6 inches tall. They reach 125 grams in weight, or about a quarter pound.
Least chipmunks earned their name, only reaching lengths of around 8 inches, about half of which is tail. When he’s standing, he’s only 3 or 4 inches tall. His weight isn’t any more commanding, at 30 to 50 grams, or about a tenth of a pound.