Better safe than sorry
Going to the vet—the topic came up on the Karen Pryor Academy (KPA) Alumni list recently. When do you know the dog or cat is sick enough to be taken to the vet?
Someone's puppy was throwing up quite a lot, and there was some kind of foreign material in the vomit. The puppy was playful and seemed normal in every way, but still. Then the owner remembered that the puppy had eaten part of a rubber slipper. The consensus from the list was to take the puppy to the vet.