A mad stone, also known as s bezoar stone, are naturally occurring masses that form in the stomachs of certain animals, particularly ruminants, such as white-tailed deer and goats. The are often called a deer pearl when found in deer. Referred to as deer mad stones, these “gems” are formed from the accumulation of indigestible materials, such as hair, fibers, and plant matter, which gather and compact over time in the stomach. Ron Spomer Outdoors
An interesting little curiosity for deer season. I can’t remember if Dad and I saw those when we killed and dressed cattle.