A maleâs antlers can measure up to 51 inches (130 centimeters) long, and a femaleâs antlers can reach 20 inches (50 centimeters). The Sami people (Sápmi) have also depended on reindeer herding and fishing for centuries. But no, they drop them for the winter to grow bigger ones for spring so all of Santa's reindeers are female! : IV: 16: IV In Sápmi, reindeer are used to pull a pulk, a Nordic sled. The Reindeer is the only species of deer in which the females carry antlers as well as the males. Scientists have observed that male reindeer shed their antlers in early December after mating season, while female reindeer keep their antlers all year. Not all female caribou (reindeer) have antlers, but for Santaâs crew to have antlers in December, they would be females.â Thereâs more to it than just the antlers. In snow the antlers are used to scrape snow away from the ground, and as such they are an important feature for survival. Some of Santaâs reindeer Facts. To know more watch this video. In comparison to body size, reindeer have the largest and heaviest antlers of all living deer species. That means Santaâs sled either has to be pulled by young reindeer, constantly replaced as â¦ Male and female reindeer can grow antlers annually, although the proportion of females that grow antlers varies â¦ So it must be female as in reindeer both sexes grow antlers. What facts have you learned recently that have completely changed what you thought to be true? Apparently, if a male reindeer is castrated, it stops the process of casting the antlers, thus he becomes more like a female. This is thought to be because females can use the antlers to find food. Alaska does have some reindeer, however, imported from Siberia in the late 19th and early 20th centuries. Female reindeer are slaying it! Female Svalbard deer begin growing their antlers in summer and keep them all year. Antlers are the reindeerâs most memorable characteristic. Female antlers are considerably linear when compared with those of a male reindeer. However, males shed it quite early in the winter start whereas females keep it until spring. But all male Reindeer lose their antlers in the late fall, well-before Christmas. Why do Female Reindeer Have Antlers? So, it would be female. He always accompanies carts of toys for kids led by reindeer. Mine is the reindeer thing. âRudolph could be a castrated male, or a female. On top of that, thereâs also a subtle change in the growth. Santa will not appear alone on Christmas Eve. - Page 2 The antlers of the female reindeer are considerably smaller than those of the male. Caribou are native to North America, whereas reindeer are native to northern Europe and Asia. Also, itâs important to note that when a female reindeer does have antlers, the size is quite different. I thought like other deer, reindeer males had the antlers. This means that if the reindeer spotted pulling Santaâs sleigh on December 24 have antlers, they must be females, as males would have already shed their antlers.