My cat is about two and a half months old. He ingested chicken bones last night (about twenty-four hours ago) and is now vomiting. The vomit is orange, the color of his cat food, and I do not see any obvious blood. He cried and vomited once and is now back to normal. How concerned should I be?

Chicken bones break very sharp, and are thus dangerous... I'd recommend a visit to the vet to be sure.