Celebrate Freshness Red Deer Split Antler M 80-120gr. These products come from the collection and natural processing of deer antlers, which shed their antlers once a year. They do not have a fixed shape and weight. They come from the antlers of male and female deer. Every spring, free-ranging deer naturally shed their antlers after mating, and then they grow back. This process continues, allowing us to provide our pets with this treat. Deer antlers are considered very safe for dogs, mainly because they do not splinter easily and are a natural daily chew. They also provide an extremely long-lasting treat for pets.