Grade	Perfusion	Cardiac	Respiratory	Eye/Muscle/Integument	Skeletal	Neurological
0	mm pink & moist CRT ~ 2 sec Rectal temp 37.8 °C (100 °F) Femoral pulses strong or bounding	HR: Dog: 60-140 Cat: 120 -200 Normal sinus rhythm	Regular resp rate with no stridor No abdominal component to resp	Abrasion, laceration: none or partial thickness Eye: no fluorescein uptake	Weight bearing in 3 or 4 limbs, no palpable fracture or joint laxity	Central: conscious, alert →sl dull; interest in surroundings Periph: normal spinal reflexes; purposeful movement and nociception in all limbs
1	Mm hyperemic or pale pink; mm tacky CRT 0 -2 sec Rectal temp 37.8 °C (100 °F) Femoral pulses fair	HR: Dog: 141-180 Cat: 201 -260 Normal sinus rhythm or VPCs < 20/min	Mildly incr resp rate & effort, ± some abdominal component Mildly incr upper airway sounds	Abrasion, laceration: full thickness, no deep tissue involvement Eye: corneal laceration/ulcer, not perforated	Closed appendicular/rib fx or any mandibular fx Single joint laxity/luxation incl. sacroiliac joint Pelvic fx with unilateral intact SI-ilium-acetab Single limb open/closed fx at or below carpus/tarsus	Central: conscious but dull, depressed, withdrawn Periph: abnormal spinal reflexes with purposeful movement and nociception intact in all 4 limbs
2	Mm v pale pink & v tacky CRT 2-3 sec Rectal temp < 37.8 °C (100 °F) Detectable but poor femoral pulses	HR: Dog: > 180 Cat: > 260 Consistent arrhythmia	Mod incr resp effort with abdmon component, elbow abduction Moderately incr upper airway sounds	Abrasion, laceration: full thickness, deep tissue involvement, and arteries, nerves, muscles intact Eye: corneal perforation, punctured globe or proptosis	Multiple Grade 1 conditions (see above) Single long bone open fx above carpus/tarsus with cortical bone preserved Non-mandibular skull fx	Central unconscious but responds to noxious stimuli Periph: Absent purposeful movement with intact nociception in 2 or more limbs or nociception absent only in 1 limb Decr anal and/or tail tone
3	Mm gray, blue, or white CRT > 3 sec Rectal temp < 37.8 °C (100 °F) Femoral pulse not detected	HR: Dog: < 60 Cat < 120 Erratic arrhythmia	Marked resp effort or gasping/agonal resp or irregularly timed effort Little or no detectable air passage	Penetration to thoracic/abd cavity Abrasion, laceration: full thickness, deep tissue involvement, and artery, nerve, or muscle compromised	Vertebral body fracture/luxation except coccygeal Multiple long bone open fx above carpus/tarsus Single long bone open fx above tarsus/carpus with loss of cortical bone	Central: nonresponsive to all stimuli; refractory seizures Periph: Absent nociception in 2 or more limbs; absent tail or perianal nociception