Antlers for dogs Antlers are ideal chewing activities for our pets. Considered as truly indestructible dog toys, antlers do not splinter unlike bones or other chew toys. They last over time, allowing you to save money for powerful chewers. Sourced from wild shedding Every year, after the mating season, deer shed their antlers from early December to March. The duration a deer keeps its antlers varies according to its genetics and nutrition. The shedding of antlers occurs over a period of 2 to 3 weeks. The shedding process does not harm the deer.