Are elevated dog bowls safe? What the two studies actually found

Asking whether elevated dog bowls are safe sounds like a question with an answer. It is not, quite. The whole published evidence base on feeder height and bloat is two studies, they disagree with each other, and the one that found an effect found the effect pointing the wrong way for anyone selling a raised feeder. That is the honest state of it, and this article is the long version.

We sell a bowl on a base. You should read everything below with that in mind, and then go and read the summary yourself, because we have linked it.

What the condition is

Gastric dilatation volvulus, abbreviated GDV and usually called bloat, is an emergency in which the stomach distends with gas and then rotates. It is strongly associated with large and giant breeds. It is not a condition anyone manages with a purchase, and nothing below should be read as advice about preventing it. If you have an at-risk breed, the conversation about risk belongs with your veterinarian.

The evidence base is two studies

A knowledge summary published in Veterinary Evidence asked the question directly: are dogs fed from a raised bowl at increased risk of GDV compared with dogs fed from a bowl on the floor? The authors searched the literature and found two papers worth appraising. You can read the summary at Veterinary Evidence, and there is an open copy hosted by the University of Edinburgh if the first link asks you for anything.

Two studies is a small evidence base for a question this widely asserted. It is worth sitting with that for a second. Every confident claim you have read about bowl height, in either direction, is resting on these two papers.

Glickman et al. (2000)

A prospective cohort study of dogs from eleven large and giant breeds in the United States. Roughly 1,637 dogs were followed, of which 98 developed GDV and 1,539 did not.

This is the study that found an effect, and the effect was an increase in risk with a raised feeder. The summary reports relative risks rather than odds ratios. Overall, raised bowl feeding was associated with a higher risk of GDV, with an adjusted relative risk of 2.10 and a 95% confidence interval of 1.4 to 3.30.

Broken down by size:

• Large breeds: relative risk 2.17, confidence interval 1.27 to 3.71. Incidence was 40 GDV cases per 1,000 dog-years in raised-feeder dogs against 18 per 1,000 in floor-fed dogs. The authors attributed roughly 4 percent of cases to raised feeding.
• Giant breeds: relative risk 1.99, confidence interval 1.00 to 3.95. Incidence was 34 per 1,000 dog-years against 17 per 1,000. Roughly 8 percent of cases attributed to raised feeding.

The more interesting detail is that height and dog size interacted, and not in the direction you would guess. For large breeds the raised risk showed up at bowl heights of one foot or less, with a relative risk of 3.06. For giant breeds it showed up at heights above one foot, with a relative risk of 2.29. In each case the other height band was not significantly associated with increased risk. If there is a mechanism here, that pattern does not make it obvious.

Pipan et al. (2012)

A cross-sectional online survey using convenience sampling, covering privately owned dogs of any breed. 2,551 surveys were analysed, 1,114 in the GDV group and 1,437 controls.

This study did not find a significant association between raised bowl feeding and GDV risk. The summary notes that no numerical results for feeder height were reported in the paper, which means nobody outside the original authors can check the strength of that null result.

Why neither study settles it

The appraisal is unsparing about both, and the limitations are the most useful part of the whole document.

For Glickman, feeding height was recorded once at study entry, potentially up to 58 months before any GDV event. Owners change things. A dog recorded as raised-fed in year one may have been floor-fed by year four. The authors did not examine interactions with eating speed or body measurements, both of which are plausible confounders. Total loss to follow-up is not reported, and 13.3 percent of dogs were already excluded for having no follow-up data.

For Pipan, GDV history was collected retrospectively, so owners may well have changed feeding height after their dog's surgery, which would push a real effect toward zero. Cases and controls were not matched on breed, size or age, and the sample was not restricted to high-risk breeds, so confounding is likely. And without published numbers, the null finding cannot be independently assessed.

So: one study with a significant finding and real exposure-measurement problems, and one study with a null finding and real confounding problems and no numbers. That is why the answer to the headline question is not a clean yes or no.

What can actually be said

Three things, and only three.

No study has shown that raising a bowl reduces GDV risk. That is the finding that matters most commercially, because the claim that elevating a bowl is better for your dog is everywhere and has nothing behind it.

One of the two studies found higher risk with a raised feeder in large and giant breeds. It has limitations. It is still the only positive finding in either direction.

Neither study found floor feeding to be a risk factor. The summary's conclusion is that, absent further research, the safest advice is to feed an at-risk dog from a floor-level bowl. It is careful about this: floor feeding "may not reduce the risk of GDV," but there is "no evidence to suggest that it will increase the risk." The summary also notes that where a dog has mobility problems that make raised feeding genuinely helpful, a practitioner should weigh the dog's height against the feeder height.

That last point is worth holding on to. Raised feeders exist for reasons other than bloat, including arthritic dogs, dogs with neck or spinal problems, and dogs who physically cannot reach the floor comfortably. Those are clinical judgements. A veterinarian who knows your dog can make them. A product page cannot.

What this means for our bowl, including when not to buy it

Our bowl is a double stainless set on a base angled at 15 degrees. The tilt is a geometry decision and not a height decision, and we explain the geometry separately in what a 15 degree tilt is for. The base does sit the bowls a little off the floor, because a tilted base has to, but it is not a feeding stand and we did not design it to bring food up toward a dog's chest.

We are not going to argue that this distinction makes the evidence above irrelevant to us. Nobody has tested a tilted base. The studies tested height, and a small amount of height is still height.

So here is the plain version. If you have a large or giant breed, and particularly one your vet has flagged as higher risk, feed from the floor. Read the summary, take it to your veterinarian, and do what they say rather than what we say. In that situation our bowl is not the right product for your dog, and we would rather tell you now.

For small and medium breeds, feeder height has not been shown to matter in either direction, and the decision comes down to material, shape and whether the thing slides around. Those are the questions covered in our guide on how to choose a dog bowl.

We make no health claim for our bowl of any kind. It does not prevent bloat, it does not aid digestion, and it does not treat anything. It is a feeding bowl.

If you want to go further

Read the knowledge summary in full. It is short, it is written for practitioners rather than marketers, and it will give you a better sense of how thin this evidence is than any retailer summary including this one. Then take the question to your vet, who can factor in your dog's breed, age, body shape and history, none of which we know.