MRI for Sebastian

We are trying to find help with vet costs for Sebastian, our 5 month old Persian kitten. He has had sudden loss of use of his back legs. His back legs are paralyzed and vet exam and x rays come back normal . Our next step is a neurological specialist for an MRI and more tests to try and figure out what is happening to our sweet baby! :( This is heart breaking for our family, we love him so much and it’s difficult to see him like this and not understand why it is happening .