Sometimes the strongyles lodge in large numbers in the windpipe, forming themselves into a ball, and thus choke the animal to death.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
If medicine is given during coughing, some of the dose may pass down the windpipe to the lungs and cause a severe or a fatal pneumonia.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
4. How was the windpipe made into the voice box?
"A Handbook of Health"
Woods Hutchinson