Three species of sucking lice can be found on cattle in Missouri. The longnosed cattle louse is generally a pest of young cattle and is about 1/10 inch long. The shortnosed cattle louse is about 1/16 inch long and is more often a pest of older cattle. The little blue louse is about 1/16 inch long.
A common length of the esophagus of a giraffe is about 40 inches. That compares to about 8 to 10 inches in a human being.
The esophagus lies underneath the aortic arches (or heart). The esophagus leads into the thin-walled crop . You should now be about 15 segments from the mouth. The crop leads into a thick-walled gizzard , which occupies about 3 segments. Extending posteriorly from the gizzard and running through the remainder of the earthworm is