Thank you for your replies!

The surgery went just fine...in fact, Zeppelin recovered very quickly and began HOWLING at the vet's! I was supposed to pick him up at 3, but they said I could come earlier so I did...he wasn't howling because of pain, but because he had to go in a cage. He's never been in a cage before.

So yeah, he's sleeping it off right now. Definitely not happy about the cone! I feel bad keeping it on him...but I also know that it's necessary. Hopefully this next week will go as smoothly as possible, at least, as smoothly as it can go with a hyper dog trapped in a cone! xD