Wearing it prevents Beefalo from attacking the player during their mating season. However, they will still attack if the player strikes first. If the parent of a Baby Beefalo is killed, and the player is wearing a Beefalo Hat, the baby may start to follow the player, provided the player does not already have a follower.
When around Beefalo during mating season and especially when shaving them at night, wear this hat to keep from being attacked.
Players should take off the Hat when next to a fire (or replace it with a sanity-boosting hat) as the item's durability will go down with it on, and the fire alone is enough to keep the character warm.