Table 2.

Behavior measurements referring to evaluating grades of stereotypy.

Score	Stereotypy
0	No stereotypy or normal activity
1	Discontinuous circling behavior (clockwise/counterclockwise circling)
	Occasional head twitching
2	Occasionally vertical dyskinetic head and neck movements
	Occasional sniffing, licking, and biting
3	Continuous circling behavior, increased body raising
	Increased sniffing, repetitive grooming (such as paw-to-mouth movements)
4	Increased lateral and vertical dyskinetic head and neck movements