I agree with the above posts, this is definitely an emergency!
Ingredients: The gum is made mostly off Sorbitol, Glycerol, natural and artificial flavors. It also contains mannitol, xylitol, soy lechtin, aspartame, acesulfame K, sucralose, BHT, and red and yellow dyes.
Today, the ingredients in Orbit Gum includes the natural sugar alcohol xylitol. This sweetner is safe for humans, but it can be deadly to dogs. According to snopes.com,
"Just 3 grams of xylitol can kill a 65-pound dog." (So just imagine what it could do to a small yorkie!) If your dog gets into your Orbit Gum, OR ANY product that contains xylitol, contact your veterinarian immediately!