My 8 month male cat recently starting having trouble walking; his hindquarters are dropped down and he is unable to put any weight on his back legs. I know he wasn't hit by a car as he has been kept in the garage with it being so cold outside. He still purrs when petted but doesn't seem to have any energy. He also has movement in his back legs when laying down (he'll scratch his ears with those feet) but just doesn't have any support in them. Any suggestions without having to take him to the vet for xrays? I thought it might be a broken back or tailbone, someone mentioned it might have been a seizure, or possibly some type of disease. He is eating and drinking some but doesn't appear to be peeing or pooping; when we set him in the litter box he usually just tries to get out w/out doing anything. Any helpful tips would be greatly appreciated. thanks