Table 2.

Rats staging (data not published)

	Stage 5	Stage 4	Stage 3	Stage 2	Stage 1
Motility	Normal	Normal	+ but not spontaneous	Reduced	No
Stature	Normal	Stooped +	Stooped ++	Stooped +++	Dying
Piloerection	No	+/-	+++	+++	+++
Eyes	sharp	Redness+	Redness ++	Eye secretions	closed