Cat ate a Scorpion Tail?

Common brown scorpion, right? It's been two days, and he has had no symptoms? I'm going to say at this point that it couldn't hurt to call the vet - just in case there are specific symptoms to be watching for, but it probably is ok to continue watching and waiting. Also, if at all possible, examine the cat's stool to ensure that the scorpion tail has made it through. Once it is out of his system, then you kind of have an end point for when the venom can effect him. I speak, not as a veterinarian, but as someone who has been stung by scorpions on several occasions. Once a sting occurs, the pain is pretty intense for six hours or so - at least with an external sting. After that, the pain begins to gradually lessen. How different it would be for a cat who would get stung internally, I can't say. But the thing to do is monitor Nicholas for signs of pain - reduced appetite and activity level, changes in mood and sleep habits, etc. Benedryl is one medication that has been advised by my own doctor for use after a sting, and also by my veterinarian for my cat when she had been stung on the face (children's liquid). Of course, I can't give you the correct dosage for your cat should he need some, so that would be another reason to call the vet, who might be willing to tell that over the phone.