Goats drink their own urine for two main reasons: to gather reproductive information through scent, or because their body is lacking essential minerals. In bucks (male goats), urine tasting is a normal part of mating behavior. In other goats, it can signal a nutritional problem that needs attention.
Bucks Use Urine to Detect Mating Readiness
The most common and well-known reason goats interact with urine is reproductive. Male goats routinely spray urine on their own faces, beards, and front legs during breeding season. They also taste the urine of does (female goats) to determine whether a female is in heat. This isn’t random or accidental. It’s part of a specific biological process.
When a buck encounters urine, he curls his upper lip back in a distinctive grimace called the flehmen response. This lip-curl pushes the liquid toward a specialized scent organ in the roof of his mouth called the vomeronasal organ. Research on goats showed that the flehmen behavior is what actually moves chemical signals deep enough into this organ to reach the sensory tissue. Goats that performed the lip-curl got the chemical compounds all the way to the sensitive back portion of the organ, while those that didn’t only got it to the non-sensory front portion. In other words, the flehmen response is the mechanism that lets a buck “read” a doe’s reproductive status through her urine.
Bucks will also urinate on themselves deliberately, soaking their faces and legs. This self-anointing behavior intensifies during rut (breeding season) and serves as a scent signal to does that the buck is sexually mature and available. The smell is notoriously strong, and while it’s unpleasant to humans, it carries chemical information that other goats interpret readily.
Mineral Deficiencies Can Trigger Urine Drinking
Outside of breeding behavior, a goat drinking urine, whether its own or another goat’s, often points to a mineral deficiency. Urine contains dissolved salts and minerals, and a goat whose diet is lacking will seek out those compounds wherever it can find them. This falls under a condition veterinarians call pica: the compulsive eating or drinking of things an animal wouldn’t normally consume.
Salt deficiency is one of the most direct causes. When goats don’t get enough sodium, they begin licking coats, chewing on leather or wood, eating dirt, and drinking urine. Phosphorus deficiency produces similar behavior, along with slowed growth, weight loss, and a generally unthrifty appearance. Other mineral shortfalls, including cobalt and copper, can also drive pica in small ruminants.
The broader pattern of pica in goats typically involves more than just urine drinking. Affected animals often show progressive weight loss, decreased appetite for normal feed, reduced fecal output, thinning hair or patchy wool (in fiber goats), and repeated attempts to eat unusual objects. If you’re seeing a goat drink urine alongside any of these signs, a mineral deficiency is the likely culprit. Providing a free-choice mineral block or loose mineral supplement formulated for goats usually resolves the behavior once the animal’s levels normalize.
Dehydration as a Contributing Factor
Goats that don’t have reliable access to fresh water may resort to drinking urine out of desperation. This isn’t a normal survival strategy, and it’s not effective. Urine is a waste product that the kidneys have already filtered out of the blood, so consuming it adds dissolved waste back into the body and can actually worsen dehydration.
You can gauge a goat’s hydration by looking at its urine color. A well-hydrated goat produces clear urine. As dehydration progresses, the color shifts from yellow to orange to brown. A goat producing dark urine and also attempting to drink it is in serious trouble and needs immediate access to clean water. Dehydration also suppresses appetite, so an affected goat may stop eating even when food is available.
How to Tell Normal From Abnormal
Context matters when evaluating this behavior. A buck curling his lip over a puddle of doe urine during breeding season is doing exactly what his biology designed him to do. A doe, wether (castrated male), or young kid repeatedly drinking its own urine is a different situation entirely.
Look at the whole animal. A goat that is otherwise healthy, maintaining weight, eating well, and has access to minerals and water is likely engaging in scent-related behavior rather than signaling a problem. A goat that is losing condition, has a rough coat, or seems fixated on licking and consuming non-food items is showing classic signs of pica that warrant a closer look at its diet and mineral intake. In rare cases, pica-like behavior can also stem from neurological conditions rather than nutritional ones, so persistent abnormal eating despite adequate mineral supplementation is worth investigating further.