This is Mercy, our 15 year old cat. Recently, we woke up to discover that she is not keeping her balance at all, and she is incredibly irritated and stressed out by this. We have had a few different tests ran, but so far nothing has come up. We have more tests we need to have done so we can determine what is wrong and what treatments she might need. Expenses for this are adding up very quickly, so anything anyone could do to help would be greatly appreciated.