Great Dog 6" Cow Tubes (Beef Trachea), 10 Count Bag (Sourced & Made in USA) Great Dog 6", 10 Count Cow Tubes are US sourced beef trachea and great for the multi-dog family Alone or filled with plain yogurt and frozen, stuffed with peanut butter or any other favorite food, there is no doubt your dog will love Great Dog Cow Tubes! Great Dog Cow Tubes are fun to eat, cracking when chewed and a great source of chondroitin sulfate which may ease still joints Cow Tubes (beef Trachea) are also a great alternative to raw hide chews! Slow Roasted in a State 2 human grade facility without soaks, smokes, washes, nitrates, colorants, BHA or BHT added