Help Save Our Doggy

My girlfriend Nadia and I are trying to raise money for our puppy bear. We adopted bear from the shelter in October at only 2 months old, and he has been our little fur baby since. The month of April we took him to the emergency vet because he was stumbling while walking, constantly scratching his ear, and yelping in pain. The vet said it was a yeast ear infection, we treated it with medication. He was great and happy again. About two weeks ago he began experiencing the same symptoms again so we made an appointment with our vet and he was examined and sedated in order to get an x-ray of his head. The vet said nothing was wrong with his ears but that it most likely had something to do with his brain or spinal cord. Ever since the sedation he has had issues with no longer being able to walk or stand on his own. He strongly recommended that we go to UC Davis in order to get an MRI to find out what's wrong, for an MRI alone the cost is $3,500 and another $250 for the initial exam. Other exspenses include treating whatever it is he has as well as trips to and from UC Davis. We love him like our kid, but we're at the end of our rope financially. He's got a ton of fight in him and we weren't going to give up on him. So now we're here asking for any help and we appreciate all that we get. Any left over money will be donated to an animal rescue.