"Cows lick hair" is a noun phrase that describes the act of cows licking their own hair or the hair of other cows. This behavior is commonly observed in dairy and beef cattle, and it serves various purposes.
Cows lick their hair to maintain cleanliness, remove loose hair and dirt, and promote blood circulation to the skin. More importantly, cows have a mutual grooming behavior where they lick the hair of other cows they are bonded with. This activity helps strengthen social bonds and establish hierarchy within the herd.