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		| Originally posted by ltl/fb Now I'm wondering whether it wanted to throw up and ate the plant on purpose, or whether it just thought the plant was tasty and did not like the throwing up part.  If it's the second, it'd better draw the obvious conclusion, dammit.
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 They generally eat plants to help them move hairballs through their GI tract.  I don't think they like the taste so much as it is an instinct thing.  If eating the fiber laden plant does not stimulate the gut to push the hairball forward, it generally stimulates the vomitting.  Either way, the hairball is gone and the cat feels better.
Talk to your vet about getting some of those hairball pastes or whatever they have now a days.  It can help to curb the cat's urge to eat the plants.
Some plants are toxic to cats, so make sure your new plant isn't one of them.