Level | Characteristic behaviors |
---|---|
1 | Unmoving and crouched in a corner, staring |
2 | Body stretched out, tail becomes straight and rigid, ears laid back, bulging eyes |
3 | Repetitive head bobbing, rears into a sitting position with forepaws resting on belly |
4 | Rearing and falling, tonic-clonic seizures broken by periods of total stillness, jumping clonus, running clonus |
5 | Continuous level 4 seizures |
6 | Body in clonus, no longer using limbs to maintain posture, usually precursor to death |