Who would even make an April Fools joke like that?
I just thought he was a horrible person for leaving the dog there still alive and twitching, albeit badly wounded, to die. Should have called somebody or taken it to a vet to see if it could be saved.
Then again, that's under the assumption that the dog wasn't actually dead but it could have just been the wording. I mean, spasms after death aren't exactly uncommon.
Either way, it's the owner's fault.