North Sulawesi babirusa a subfamily, Babyrousinae, that branched off from the warthog branch of the pig family (Subfamily Phacochoerini) during the Oligocene or early Miocene. The North Sulawesi babirusa has a head-and-body length of and weighs up to . It is virtually hairless (easily revealing its greyish skin), and the tail-tuft is also nearly hairless. In males, the relatively long and thick upper canines are strongly curved. They emerge through the roof of the snout, while the long lower canines emerge through the side of the mouth. The upper canines can grow backwards in a curve until they penetrate the skull of the
Class A Wild Trout Waters at least one Class A Wild Trout stream. However, in that year, only nine counties contained at least of Class A Wild Trout Waters. Class A Wild Trout Waters are virtually never stocked with trout since they are managed solely for the propagation of wild trout. However, most current Class A Wild Trout streams were historically stocked with trout prior to the introduction of the Pennsylvania Fish and Boat Commission's classification system. They may also be tributaries of streams that are stocked with trout. In 2014, there were 274 Class A Wild Trout Waters for brook trout, comprising of streams.