He usually gets a little lethargic after he gets shots, but I feel like over 72 hours is enough time for those side effects to stop. He has been lethargic on and off since Friday but he was eating, drinking, and playing at times and seemed much better yesterday afternoon. This morning, he seemed to be doing badly again...very lethargic, tail down, ears down, sad face and everything. When he breathes it seems like he is shivering. He's not having labored breathing, but it seems a little weird. The hair on his spine is standing up, which it usually does if he is sick or in pain. And he hasn't eaten much today. He jumped off the couch when I came home but went right back to sleep after a minute.
I called the vet this morning and they said to keep an eye on him but since he wasn't vomiting or having diarrhea and was eating, it was probably just the effects wearing off. He spent today with my in-laws and they said he was doing pretty well though less active than usual. I didn't really expect him to seem sick still this evening. We're not going to give him any more aspirin or glucosamine.
Anyway, I've looked up a bunch of stuff on the internet about vaccine side effects and they all just just say that lethargy is normal. I am just surprised it's lasted this long, since Friday morning! Our vet office is closed by now so we're keeping an eye on him in case we need to take him to the emergency vet.
Does this sound normal? Still feeling sick from vaccines over 72 hours after they were administered?
Sorry this is so long! Thanks :)