My 2 y/o cat just ate a rubber band. Vet suggested waiting to see if it passes (since it wasn’t very big and in the past he has successfully passed at least one) and then bringing him in if he shows any serious symptoms. Just curious if others have dealt with similar what they did/result of the decision? Is this a really dangerous situation?
Yes, this is a potentially dangerous situation.
Rubber bands and other items that are string-like can get tangled up in the digestive tract and cause damage. Though it's definitely possible nothing will happen to the cat, and the rubber band will simply pass through naturally, the very worst scenario is the cat could die.
However, that said, I am not a vet, and so I cannot really advise you on what is the best action to take. Definitely follow whatever advice your vet gives you, and make sure to keep all rubber bands, strings, tinsel, etc., away from your cat in the future.