The Cameo Shift (CS) is when a Therianthrope experiences a shift related to an animal that is not a known theriotype. This could be a mental or phantom shift, possibly other types of shifts as well. Cameo shifting seems to have first appeared in Alt.Horror.Werewolf discussion in 1999. 
Cameo Shifts and Polytherians
Many Therians who are only just learning about Therianthropy may confuse Cameo Shifts for true theriotypes, resulting in Therians who think they are a five- or six-theriotyped polytherian when they actually may only have one or two true theriotypes.
It is important to consider that a Cameo Shift could be due to either a spirit animal, being Otherhearted, or that it occurred due to a completely human sensation.
Some therians believe that all shifts that a therian experiences are related to a theriotype. They explain cameo shifts as a shift that is either imagined, or as a shift related to an animal that is, in fact, a theriotype of the therian that just happens to not express many shifts.
- ↑ Cameo Shift, Shifters.org, May 17, 2006. http://web.archive.org/web/20060517083155/http://www.therianthropy.org:80/SO/shifting-c.htm
- ↑ Use of "Cameo Shift" on AHWW, June 19, 1999. https://groups.google.com/forum/?hl=en#!searchin/alt.horror.werewolves/cameo$20shift%7Csort:date/alt.horror.werewolves/zG6ruKsEY7M/KEea7jJaucsJ