Table 1.
RGS action units | Description during pain |
---|---|
Orbital tightening | The area of the eye decreases from wide to squinted. |
Nose and cheek flattening | The nose and cheek display a flatter and longer appearance. |
Ear position | Ears appear curled or pointed and often appear spread out. |
Whisker position | Whiskers appear tense and bunched together or angled down. |
RGS, Rat Grimace Scale.