do reindeer lose their antlers

Yes, reindeer lose their antlers every year. This process is called "antler shedding" or "antler casting." Reindeer shed their antlers during the winter months, typically between November and February, when the days are shorter and the weather is colder. The antlers are made of calcium, and the reindeer need to shed them in order to conserve nutrients and energy during the winter when food is scarce. The new antlers will grow back in the spring, when the days are longer and the weather is warmer.