The Muenster yellow-toothed cavy (Galea monasteriensis) is a species of rodent in the family Caviidae.

[1] Specimens from this location were shipped to Muenster, Germany, in 1997 for laboratory research, where the species was recognized and described.

[1] Galea monasteriensis was recognized on the basis of morphological, behavioral, and reproductive differences from related species.

[1] Since 2016, the IUCN has regarded this population as a subspecies of the common yellow-toothed cavy, i.e. as Galea musteloides ssp.

Both males and females of G. monasteriensis defend their territories and care for their pups.