Get Your Dog Some Fresh Air
For issues involving irritation by dust, pollen, or unpleasant odors, all your dog may need to stop gagging and coughing is some fresh air. So move your pooch to an open spot or a room with an air filter.
If the irritation was from air pollution then they should stop gagging within a few minutes.
Give Your Dog Some Water
Giving a gagging dog water can be a bit tricky, especially if they have something such as laryngeal paralysis or tracheal collapse. These may increase the risk of the puppy choking on the water.
However, water could offer relief for dogs gagging as a result of something like nausea or hunger pangs.
Feed The Pooch
Speaking of hunger pangs, all you may need to do to help your dog stop gagging is to feed them. However, as with giving them water you need to be sure that the other possible causes are unlikely.
If your dog still gags and chokes while they are eating, it is best to stop feeding them to avoid the choking to persist.
Try Choking First Aid For Dogs
If you think your dog is gagging as a result of choking on a foreign body, you may want to attempt choking first aid for dogs, as you make arrangements to take them to the vet.
This may be as simple as inspecting the mouth for visible objects and manually clearing the dog’s throat to more complex measures like the Heimlich maneuvers on the dog.