Join Date: Mar 2010
Location: Ontario, Canada
If she goes outside, it's possible she ate something she shouldn't have (spoiled food, etc.). Dave is right, in that vomiting clear liquid can be a sign of a problem. But, just like with humans, it can also mean that the cat's stomach is empty (i.e., she'd already thown up outside) but she still has an upset stomach. So, she continues to vomit, but only clear liquid emerges, since her stomach contents are now empty. In your situation I'd likely put a quick call into the vet to see what he/she says, and keep an eye on Loona for any other signs of ill-health or any further vomiting. I would also keep her inside for a day or so, in order to keep a better eye on her. I hope she's feeling better soon.