20" x 20" Adirondack, Lake Accent Hidden Zipper in Back Linen with Feather Down Fill Knife Edge or Corded Finish Info Tag Includes: Moose are the largest of all the deer species. Only male moose (bulls) have antlers. The particular shape differs from animal to animal and are shed every year around November and are replaced in the Spring with larger ones. The antlers are for display during the competitive mating season. Moose are peaceful animals and very rarely become aggressive although they will defend themselves if threatened and males become more highly strung during the mating season.