Why is my dog vomiting? And when should I worry?

Chihuahua dog vomiting — (Image credit: Alamy Stock Photo)

There are many reasons as to why your dog could be vomiting and it can be worrying when you first see it – we’ve all been there. Before vomiting, dogs are likely to pace, pant drool excessively and lick their lips, plus they’ll probably have a reduced appetite, and painful and distended abdomens – and then you’ll hear the retching. Let’s face it, there is nothing that gets you out of the chair or bed quicker than a heaving dog! But why are they being sick?

There are so many reasons that dogs vomit, including (and not limited to)…

This can be very dangerous. It’s important that you do not allow your dog to overexert itself in hot weather, ingest too much water (either from swimming or drinking) and you keep it out of the sun and the car on hot days. Use one of the best dog cooling coats to maintain their body temperature. If your dog has been exposed to too much sun, look for a rapid heart rate, drooling and either bright red or very pale tongue and gums. Get to the vet as soon as possible.

This is not talked about a great deal, but a highly anxious dog can have the same emotions we do. This results in a racing heart, nervous energy, pacing and the feeling of nausea. Anxious dogs can soil their bedding, the area in which they are left or even out on a walk if they are fearful of dogs or a place. Vomiting and diarrhoea are your dog’s way of expressing their distress. Your vet can help with anxiety medication in severe cases, but you can try some calming products, such as Serene-um Drops (available on Amazon) or melatonin and pheromone calmers (such as Adaptil) in the first instance, together with a good routine to help make the dog feel safe.

One of the first things to look at is the difference between regurgitation and being sick due to illness or poisoning. Vomiting is not uncommon and, occasionally, healthy dogs will be sick for no apparent reason and then continue with their day as if nothing happened. This type of vomiting is usually nothing to worry about. Once you’ve cleaned it up, look for clues as to what’s caused the sickness.

If you know your dog is greedy and a scavenger, this can cause vomiting after eating. Eating too fast and taking in too much air is dangerous as it’s one of the main causes of bloat, which distends the intestine. Bloat symptoms can be easy to miss – it can be mistaken for a stomachache or thought that the pacing is related to attention seeking or wanting to go out. Generally, a dog will lay down and tuck his legs under trying to scratch its stomach and find it difficult to settle. If you see these signs, you must call your vet as this usually requires an operation.

If you know your dog is an outrageous glutton, try to counteract this problem with one of the best slow feeder dog bowls. These can be bowls with knuckle-type mounds in them or patterned mazes so the dog cannot get the whole head in and inhale. It slows them down and takes them longer to eat their food, which means they takes in less air. Raising the food off the ground with an elevated dog bowl used to be recommended, particularly for the larger dog breeds, although this is now not proven as a total cure or aid.

So how do you tell when vomiting is a cause for concern? Your dog is likely to be OK if they vomit once without any other symptoms. However, if your dog also exhibits other symptoms, such lethargy, constant drooling, lack of appetite and unwillingness to move or engage, this is cause for concern. If your dog cannot poo, wants to eat but then is sick immediately after, these are signs that your dog could have done the following:

3. Ingested toxins or poisons – this can include plants, household substances and foods that are harmful to dogs. Peanut butter being one – a lot of the peanut butter on the shelves contain xylitol, which is highly toxic to dogs, and so you’re safer to purchase one of the best safe peanut butters for dogs. Chewing gum also contains xylitol. I know of a dog local to me who sadly died after eating a piece of discarded chewing gum from the floor due to the toxicity of the xylitol in it.

Diabetes – signs include excessive thirst, lots of sleeping and headache in the dog
Kidney and liver failure, which is usually accompanied with excessive drinking and lethargy and, in the case of liver failure, jaundice
Pyometra (womb infections)
Cancer, which often causes weight loss if it is in the internal organs, but symptoms may not present until it is in a very advanced stage
Pancreatitis, which is accompanied by abdominal pain
Colitis
Parvovirus and distemper

I do not allow any unknown dogs or unvaccinated dogs on my premises when I have a litter. I also ensure that prospective owners and visitors stand in a tray of antibacterial water, plus wash and anti-bac their hands before they are allowed near my puppies. A young dog loses its mothers immunity at six weeks, so there is a real risk of contracting these diseases before their first vaccination. Likewise, puppies that are not wormed can have parasites in their stomachs, which is usually prevalent in their stools, but can cause vomiting, too – especially the helicobacter parasite. Personally, I will take any young dog under eight months straight to the vets if I experience episodes of vomiting. The young ones can dehydrate and go downhill extremely rapidly if not cared for by a vet.

providing travel sickness remedies that help them cope with journeys
removing water for 10 seconds or more before placing it back down again if your dog is hot, has run and exercised excessively, so that they do not gulp too much too quickly
stop them eating excessive amounts of grass and horse or livestock poo
make sure that your rubbish bin is secure and out of reach, especially if you have put cooked bones and carcasses in there
make sure your dog is wormed when necessitates but remember that sometimes wormers can cause sickness , too
do not let your dog overheat or leave them in cars on hot days
make sure your dog does not over exercise and, if necessary, make sure they have a cooling coat
keep medicines and household cleaning agents out of their reach
keep all harmful foods and plants sectioned off or out of harm’s way

Why is my dog vomiting? And is it an emergency?

Morning sickness

Travel sickness

Heatstroke

Anxiety

What to do if your dog is vomiting

When should I be worried?

More serious health problems that can cause vomiting

Vomiting in puppies

Can vomiting be prevented?

You might also like:

Gently does it: best slow-feeder dog bowls for speedy eaters

Why is my dog eating grass?

Best snuffle mats for dogs to mimic their natural foraging instinct

Why does my dog eat poop?

Why does my dog stare at me? An expert explains