They also have sharp teeth so they can eat animals much bigger than themselves. They have claws to help them climb trees and to attack their food by turning it over. With the porcupine, the fishers bite right into its stomach and eat what they need from the porcupine. The fisher is helped by the government. Laws are being made to help the fishers so they don't become extinct.
Laws control the number of fishers that can be trapped.
Encyclopedia America na. Grizmek, Bernhard H.C. Dr., Grzimek's Animal Encyclopedia.