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.
ESOPHAGUS: (as seen through an endoscope) The muscular tube, about 10 to 12 in (25 to 30 cm) long, that carries swallowed foods and liquids from the pharynx to the stomach. In the upper third of the esophagus, the muscle is striated; in the middle third, striated and smooth; and in the lower third, entirely smooth. Peristalsis is regulated by the autonomic nervous system.