That's usually an indication that the dog is very ill.
This sounds more like a intestine problem which is causing your dog to regurgitate the food back up. You will need to have a vet examine your Dog.
ulcers
Sometimes, deworming can cause a dog to lose their appetite or even some sickness. This is normal and should pass within a few days.
dog hog
Justin Bieber Doesnt have a dog,he also doesnt have a pet.
Appetite for Life - 2012 Hot Dog Throwdown - 4.14 was released on: USA: 17 April 2013
Buprenorphine is a medication that can cause loss of appetite in some dogs. This could be why your dog is not eating after being prescribed this medication. It is important to consult with your veterinarian if you have concerns about your dog's appetite while on buprenorphine.
Will being in heat cause the dog to loose her appetite?
my dog doesnt eat his collar
No Garrett Hedlund Doesnt Have A Dog
Decreased appetite and upset stomach are some of the signs that a dog is infested with worms.
Never, it will make them have an appetite for them and they will eat plants.