Toads do cause dogs to become lethargic and drool a lot so it might be the same for cats. One of our dogs licked a toad a few years ago and we had to keep him in the entrance on layers of sheets because the drool was so bad. It cleared up in less than a week and he was fine, but it did interfere with his eating and he did throw up quite a bit. No side effects, hope it works the same for cats, hope Pinot gets back to normal soon.