This is a myth that just won?t quit, albeit one that is rooted in fact. There was a time in history, about a century or more ago, when there was truth to this. Horses then were primarily working animals, and there was little use for one when it became too old or sick to pull its own weight, so to speak. In those years, many horses were in fact taken to glue factories that would slaughter and render them. Glue was derived from boiling the hooves, bones, and hides of horses and other hoofstock. Gelatin comes from the hooves of animals, and was one of the key ingredients for making adhesives. Many of the popular brands of glue that are made today, including Elmer?s, are entirely synthetic. They are made of various chemicals, not horses or other animals. Elmer?s even states this on their own website, in the Frequently Asked Questions. Some glues are still made from animal parts, but mostly today that comes from cattle. Because of the high demand for beef, especially in the fast food industry, there is an abundance source of slaughtered cattle to get the necessary parts from, since all the food industry cares about is the meat.
Horses were only made into glue many years ago. Back then it was the hooves and bones. Now, most glue is synthetic with no animal parts. However, some glue is still made partially from cattle since there is so much left over since we have such a huge demand for beef