This is a larger, different moose than the ones that have appeared on camera before. Once a moose reaches one year of age, the males will develop antlers that grow in size with each new set of antlers he grows until he reaches his prime, after which antler sizes will reduce each year. In the fall or early winter, moose lose their antlers, only to grow a new, larger set the following spring. The antlers are formed of living tissue supplied by blood through a network of blood vessels covered by a soft, smooth skin known as velvet. In time, the tissue solidifies, the velvet is scraped off, and antlers become mineralized dead matter.