kitty foaming at mouth and peeing

Help...my 3 year old spayed female cat has twice in the last few months been crying on our stairs, foaming at the mouth and accidently peeing. She seems perfectly normal after. Any ideas why? She is stricly indoors with 4 other cats and eats Nutro Natural Choice Complete Care Adult Indoor Cat food only. Any ideas???

Could she have eaten something she shouldn't have eaten? A plant or an insect? Have you recently cleaned with a cleaning solution when these events have taken place? How about electrical outlets, are they covered? Could she have gotten shocked? This isn't normal feline behavior and if it were me, I would be looking around at kitty level to see what might be the cause. In the meantime, I would also check with the vet - she should be seen.

I would also be looking around to see if there is anything your cat could of eaten ,chemicals cleaning supplies or plants. The foaming at the mouth would make me think its some type of product that is causing this.

One of my cats exhibited symptoms like this a couple of years ago. She had been nibbling on a hyacinth plant that I didn't realize was poisonous. Fortunately it only happened the one time and she has been fine ever since. You definitely want to take her to the vet in the event this is a symptom of something more serious, such as a seizure disorder.