Table 1.

Chiari‐like malformation grading definitions adapted from the British Veterinary Association / Kennel Club Chiari‐like malformation Health Scheme.

BVA Grade	Cerebellar Changes
Grade 0	No CM
Grade 1	Cerebellar indented (not rounded). Indentation by supraoccipital bone, but signal consistent with CSF between caudal cerebellar vermis and FM
Grade 2	Cerebellum impacted or herniated into FM

BVA, British Veterinary Association; CM, Chiari‐like malformation; CSF, cerebrospinal fluid, FM, foramen magnum.