Dogs don't chew ... it's a nasty fact of nature. In the wild, a wolf or a coyote who takes the time to chew loses its food to another wolf or coyote who bolts it down whole. Hence, bolting food down without chewing is a natural evolutionary "survival of the fittest" behavior.

And, another nasty fact of nature ... a dog will eat just about anything, no matter how rotten, rancid, disgusting, bad for them, or completely inedible it is. They usually just throw it back up, or poop it out later. This is ok, they have short, fast digestive tracts, most things just pass right on through. It's when something gets stuck, that there is a problem. I've heard of rawhide knots, panty hose, baby diapers, etc. getting stuck and killing dogs. One of my customers dogs had to have emergency surgery for eating several pounds of gravel.

Dogs eat stuff, dogs puke stuff up. It's pretty normal. Disgusting for us, normal for them. If it doesn't get worse, I wouldn't worry about it.

Anything fed to a dog in moderation - with the exception of known toxins like chocolate, caffeine, onions, etc. - is not going to harm a normal, healthy dog. Dogs are omnivores, they have developed the ability, over millions of years of evolution, to eat meat, plants and grains. Highly processed food is not good for dogs, just as it is not good for people. But a few bites here and there is not going to cause harm to a healthy dog, just like a candy bar or a Twinkie is not going to cause harm to us, as long as we are not eating twelve Snickers bars every day or something.