There are four types of camouflage in nature: concealing, disrupting, disguise and mimicry. Hidden coloration is used to blend into the environment. For example, the brown fur on a deer and the white fur on a Polar Bear. The animal's outline is broken down by disruptive coloration like spots or stripes, such as those on leopards and zebras. Animals disguised look different. For example, a walking stick appears like a stick. Mimicry, however, is the act of looking or acting as another animal. Hunting camouflage is a combination of concealment and disorienting coloration. This helps hunters blend in with the environment while also breaking down human forms. The disguise of hiding behind whites and concealing in white snow goose decoys can be used to hide. While crawling towards turkeys with a tail fan, strutter or other decoy is similar to an aggressive tom's actions, it may also work as a method of camouflage.