Here's what the dewlap does for a goat:
* Temperature regulation: The dewlap can act as a radiator, helping the goat dissipate heat in hot weather. The skin in the dewlap is thin and has a good blood supply, making it efficient for heat exchange.
* Protection: Some believe that the dewlap might offer some protection from predators, particularly in the case of smaller goats. It can be a distraction, and in some cases, a goat might even be able to use the dewlap to shield itself from bites.
* Scent marking: The dewlap contains scent glands that goats use to mark their territory. They rub their dewlaps against objects and other goats to leave their scent.
* Display: The size and shape of the dewlap can be a sign of a goat's health and status within a herd. Larger dewlaps are often seen as a sign of strength and dominance.
So, in short, the dewlap is a multi-functional feature that helps goats with thermoregulation, protection, scent marking, and social communication.