BarknBig Moo-Hoos Medium Beef Trachea (5-6"). You may have seen these in the stores before. You may have also thought, "Wow what is that thing?". It comes from the neck region of the Bull used to breathe. The most exciting aspect of this chew is that it contains the valuable Hyaluronic Acid (HA). HA aids in hip and joint health. Most of our pets have issues with there hips as they grow older. Some have joint issues even at a young age. If only they could speak to us, they would say they need trachea to help them out and get them out of their dormant position. If you have ever had hip problems, you know it is not comfortable and can be painful. Try the natural chew for your pets that treats and supplements all at once.