My dog ate a fly. Is it safe for dogs to eat flies and small insects?

Swallowing flies will not cause any harm to Scooter but if he is eating them in abundance, he may develop vomiting / diarrhea. Otherwise, if he is eating them occasionally, this should not be a problem. You could use fly traps to help reduce the amount of flies in the area where Scooter spends most of his time.

I would definitely try to discourage this type of behavior if possible. While they not likely to cause severe illness or death in dogs, they can still cause problems particularly if the bugs were spending any time near pesticides. I have read about instances of dogs consuming a few of these and ending up in the hospital and then also read about others who have eaten dozens with little to no reaction. As a result, a "better safe than sorry" attitude should probably be taken.

Most bugs will not harm a dog if eaten. In general, the more colorful a bug is, the more toxic it may be. Rinse his mouth thoroughly with cool water for at least 15 minutes. Monitor for lethargy, drooling, swelling or pawing at the mouth. See your veterinarian if any of these symptoms develop.

Most dogs like to eat bugs, grass, and other items they shouldn't. Keeping an eye on Molly and stopping her from eating anything potentially harmful is a good idea. It would be hard to say if the bugs are safe to eat or not without knowing what bugs she is eating.

Yes, many dogs do this :) I would try to discourage her from trying to eat bees or other stinging insects as they may sting her nose or mouth, but otherwise ingesting insects rarely causes any problems in my experience.

Even if the cockroach had come into contact with some type of insecticide, it's extremely unlikely that there would be enough present to cause any toxicity issues for Bubbles - so as long as he's acting normal, you shouldn't need to worry :)

While generally eating insects is not detrimental to your puppy (extra protein, and the fun of catching them...), it may be a good idea to teach it not to go after insects, as your puppy cannot distinguish between stinging insects such as wasps and bees and biting insects and spiders and those that do not hurt it. Stings and bites can cause allergic reactions, which can turn into emergencies. Having a full course of vaccinations or not does not make any difference,