Thanks, y'all. We'll see in a few weeks. Fancygirl, thanks for all that info! I'm going to read all of it now. He seems to be fine otherwise, and now that we're giving him the Pepcid AC he's stopped puking. His appetite is fine, he drinks a normal amount of water, his bathroom habits are normal; he seems to feel perfectly okay except he was puking so much. He's lost some weight, but he's still a perfectly healthy 14 pounds. He really seems to feel a lot better with the Pepcid. So if he does have cancer, it's still pretty early on.
I never noticed the similarities between his pic and the Einstein pic, LOL! That's so awesome. I'm going to have to make a lolcat out of it. Just for shits and giggles, here's my other favorite Buddy pic...

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