Cure for Caspian

Please help us save Gavin’s service dog  Caspian! Gavin has severe non-verbal autism and Caspian helps alleviate stress and is trained to smell seizures. 
Caspian Recently started having nosebleeds and clots. His vet referred him to a specialist but the cost is astronomical. It has been recommended for Caspian to have a CT of the head, chest x-ray, and nasal scope. If you can give any amount it would be greatly appreciated.