Reptiles undergo this type of dormancy during the late phases of autumn. They typically only wake up to consume water and then go back to sleep. Reptiles eat a great deal of food right before brumation since they can go for months without eating anything. This dormancy can last for about 8+ months depending on the age, health, and size of the reptile in question. This type of dormancy is typically begun by a decrease in daylight and with the onset of cold weather. Reptiles usually don’t brumate during the first year of their lives; rather they simply slow their movements and eat less.