Specializing in Canine and Feline Neurology and Neurosurgery for over 35 years

Imaging Findings: The radiograph shows a congenital fusion of the C3 and C4 vertebrae, i.e., a block vertebra.

Discussion: The block vertebra could result in a lack of normal range of motion of the cervical vertebrae causing extra stress on the C2-3 and C4-5 disk spaces. This stress could lead to an intervertebral disk extrusion. Other differentials include infectious or inflammatory disease or neoplasia.

Question: Based on this assessment, what next step would be best to find the problem?