Some dogs eat grass very regularly, they only eat it in small amounts and quite often they then vomit.The vomit is mainly frothy saliva mixed with the grass. Why have they eaten the grass is answered in the fact they do vomit. It is thought that the dog may have excessive digestive juices accumulating in the stomach. So, to relieve himself of these juices the dog makes himself vomit. Most people are not concerned with this, but if you are, or it is causing you problems you may try giving the dog more, 2 or 3, smaller meals during the day rather than one larger meal. Many dogs just seem to graze on fine grass and actually go looking for it, my dog does. This probably forms roughage, for your dog, which helps in the overall diet, and should not be of concern to the owner.
Always check if you see your dog vomit, it may be of no importance or could be quite serious. In humans and dogs, vomiting is part of the defense mechanism employed by the body. The dog may need to get rid of some food, may have eaten far too much and is uncomfortable, eaten something that was less pleasant and the body just wants to get rid of it quickly before it goes through the rest of the system without causing any harm. If your dog vomits for a long period though, or persist in vomiting be very vigilant and a visit to the vet maybe needed. Should you ever see blood in the vomit, a visit to the vet should be done without delay.
Vomiting takes place when the muscles of the chest, abdomen or the diaphragm move sharply to remove the content of the stomach. Dehydration can be caused if you dog frequently vomits. A check to see if your dog is suffering from dehydration is, hold up the skin of their neck between your fingers and release it. If it falls back into place your dog should be fine, if it stays upright it suggests you dog may be dehydrated. Always check this out with your vet. Vomiting dogs should not be given too much water, give it in small amounts every 30 minutes or so.
There are many very serious diseases including canine parvovirus disease or kidney disease. In these cases the dog is likely to be suffering from other symptoms such as not wanting to eat, diarrhea and general listlessness. Visit your vet. Travel sickness also affects dogs as well as humans. Taking the dog in a crate when travelling, with the crate covered can sometimes help relieve this problem.
If your dog vomits, never ignore it, check it out if happens again and if you are at all concerned, it is safest to get veterinary advice.