Porencephaly in a fennec fox (Vulpes zerda)

Area of Science:

• Veterinary Pathology
• Comparative Neurology
• Developmental Biology

Background:

• Porencephaly is a rare neurological condition characterized by cavities within the brain.
• Fennec foxes (Vulpes zerda) are small desert canids.
• Asymptomatic cases of porencephaly are seldom reported, especially in exotic species.

Observation:

• A postmortem examination of a 9-year-old male fennec fox revealed a large cavity in the right cerebral hemisphere.
• The cavity contained cerebrospinal fluid and extended to the right lateral ventricle, with associated hippocampal swelling and displacement.
• Histological analysis excluded infarcts, hemorrhage, inflammation, or tumors.

Findings:

• The findings suggest a local circulatory disorder during the fetal developmental stage as a potential cause, though the exact etiology remains undetected.
• This case represents the first documented instance of asymptomatic porencephaly in a fennec fox.
• The animal exhibited no neurological symptoms during its lifetime, hindering a premortem diagnosis.

Implications:

• This report expands the understanding of brain malformations in exotic canids.
• It highlights the possibility of subclinical neurological conditions in fennec foxes.
• Further research into developmental disorders in wild canids may be warranted.