I just got a call from the vet. He said that by the sounds of it, it doesn't look good. He thinks that its either a spinal abnormality, or a deep vein thrombosis. He said the gudging by the sounds of thinks, I should bring him in today, and either get the tests done (which will cost at least $360) or I should consider euthanasia. I won't have the money for the tests until friday, and i don't think my mother will pay for them since she thinks this is a waste of money. When I explained this to the vet, he said that this can't wait until friday, that it wasnt' fair to Zorro and that I should think about his quality of life. He also said that if he do get the tests done, there is still a good chance of having to put him down. I don't know what to do...