Sigh...look like everybody has a vomitting cat. Only 1year, I still consider myself quite a new cat owner. Vomitting can mean many things, its hard sometimes to tell what is what, hope someone more experienced can help you. As for me, I do get quite worried each time ET vomits, if he is eating too fast, I'll usually see undigested food or kibbles. When it is somethingelse beside hairball or undigested food I see in the vomit, I start getting worried. But then, like my hubby said, if he doesn't look listless, still eating well and playing, then there's nothing to worry about. I just hope so.