Rabbit off its food: stasis or obstruction, two opposite emergencies
Published by Planète Pets · managing editor: Clément Lacaille · how our guides are written
A rabbit that stops eating and stops passing droppings is an emergency, everyone knows that. What is far less well known is that this single picture covers two situations with opposite treatments: gut stasis, managed medically, and intestinal obstruction, which often calls for surgery. Telling them apart changes everything, and a drop of blood helps. Our care guidance is gathered in the rabbit care and grooming section.
Contents · 4 sections
One simple measurement that separates the two pictures
Frances Harcourt-Brown and Sarah Harcourt-Brown published an assessment in 2012, in the Veterinary Record, of the clinical value of blood glucose measurement in pet rabbits, based on handheld-meter readings from 907 animals (see the study). Values ranged from 1.2 to 30.1 mmol/L, with no effect of sex or sedation. Above all, two means stand clearly apart: 24.7 mmol/L in the 18 rabbits with confirmed intestinal obstruction, versus 8.5 mmol/L in the 51 rabbits with confirmed gut stasis. The authors also note that severe hyperglycaemia, above 20 mmol/L, came with a poor prognosis.
A German study by Böttcher and Müller, published in 2024 in the same journal, independently found hyperglycaemia in 44 % of rabbits with gastric dilation, alongside azotaemia in 51 % of them.
Why this is the opposite of a detail
The same team had described in 2007, again in the Veterinary Record, 84 episodes of gastric dilation in 76 pet rabbits (see the study). A true obstruction was confirmed in 64 cases. And the culprit is not the folklore one: in 49 cases it was a compressed pellet of felted hair lodged in the small intestine, not a "hairball" in the stomach. Next came locust bean seeds (4 cases), tumours (5), post-spay adhesions (2), and one case each of a carpet fibre, tapeworm cysts, a strangulated hernia and diverticulosis.
That is exactly why you should never syringe-feed an anorexic rabbit or give a gut motility drug on your own initiative: across 84 episodes, 64 were blocked pipes, and pushing transit through a blocked pipe makes things worse. Our article on rabbit gut stasis already advised this; these figures give the reason.
Four actions that follow from the data
- Faced with anorexia and no droppings, explicitly ask for both an X-ray and a blood glucose reading. Thirty seconds and a drop of blood, to separate two opposite treatment paths.
- Give nothing before imaging: no syringe feeding, no prokinetic, no "tummy massage" picked up on a forum.
- Clear fluffy textiles out of the free-roam area and brush intensively during the moult — one obstruction by carpet fibre features in the series, and hair pellets dominate the picture by a wide margin.
- Drop seed mixes, whose locust bean content caused four obstructions in that same series: our reasoning is gathered in why to avoid rabbit seed mixes.
Frequently asked questions
Is there a glucose threshold to remember?
No, and that matters: 24.7 and 8.5 mmol/L are means, the study publishes no cut-off, no sensitivity and no specificity, and the distributions necessarily overlap. Glucose points a direction; it does not decide alone.
Can stress skew the reading?
Yes, and the authors say so explicitly: a terrified rabbit in the consulting room can be hyperglycaemic without any obstruction at all. That is why glucose complements the X-ray and never replaces it.
Is obstruction always fatal?
No. In the 2007 series, 19 of the 40 rabbits operated on recovered, and notably 13 of the 15 rabbits whose X-ray showed the foreign body already past the blockage recovered without surgery. How early the imaging happens determines which of those paths the rabbit is on. Find all our guides on the rabbit hub.
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This guide is part of Planète Pets’s Rabbits universe. Our advice is general in nature: for any health concern, your veterinarian remains the only reference.
