Is red clover poisonous to cats? I have researched different sites and some say clover is poisonous and others say you can give it to your cat. I gave my cat some Thursday night and every since he has been vomiting every time he tries to eat. I didn't make the connection until I gave him a little more on Friday. There were a few leaves left on the floor that he was nibbling at on Saturday and as of this morning he was still vomiting. I thought maybe it was a hairball but there is no fur in the vomit. If clover is indeed poisonous to cats, what should I do for him? He doesn't appear to be in distress, only when he eats. He was playing this morning and dashing around like he usually does in the morning then he was vomiting again. Later he was playing with the laser light and now he is hiding behind a chair just sitting. He isn't at all lethargic, he responds to petting by purring loudly and he puts his head up in the air so I can rub his neck. Its only when he tries to eat that he starts vomiting again. I don't really have money to take him to the vet and I am hoping that given a few days he will be fine. He didn't ingest a large quantity just maybe 6 leaves the first time and even less the second time. This particular cat has an affinity for eating things he shouldn't (tinsel garland at Christmas time) and he seems to have a particularly sensitive tummy. That will give him diarrhea for three days before it finally comes through. Do you think maybe the clover just irritated his stomach and that is why he can't keep food down? He used the litter box this morning so he must be keeping something down and he is getting water...as my other can't cannot possibly be making all those wet spots in the litter box herself...lol The one website I read said that red clover will cause nausea and vomiting in cats, but doesn't specify anything to do for them.