BlooChoo Antler Small Full Xlong 25-50gr. The products come from the collection and natural processing of deer antlers that shed their antlers once a year. They do not have a fixed shape and weight. BlooChoo Antlers come from the antlers of male and female deer. Every spring, free deer naturally shed their antlers, usually after mating, and they grow back over the course of their lives. This process continues, offering pets this favorite treat. BlooChoo Deer Antlers are considered very safe for dogs, as they do not easily splinter and provide a natural daily chew.