Buru babirusa teeth are strong enough to crack any kind of nuts. Babirusas lack the rostral bone in their nose, which is a tool used by other wild pigs for digging. Therefore, they prefer feeding on roots in soft muddy or sandy soils. Cannibalism was reported among babirusas, feeding on the young of their own species or other mammals. North Sulawesi babirusas form groups with up to a dozen of individuals, especially when raising their young. Older males might live individually. The north Sulawesi babirusa reach sexual maturity when they are 5–10 months old. Their estrous cycle is 28–42 days, and the
Class A Wild Trout Waters up more than 75 percent of the total wild trout biomass. The criteria for rainbow trout are considerably simpler: the only requirement is that the biomass of wild rainbow trout less than long must be at least . There is only one stream in Pennsylvania that is Class A Wild Trout Waters for brook trout and rainbow trout: Roaring Run. There are several rankings with lower biomass requirements in the Pennsylvania Fish and Boat Commission's classification system: Class B Wild Trout Waters, Class C Wild Trout Waters, Class D Wild Trout Waters, and Class E Wild Trout Waters. The Pennsylvania