Gastrointestinal stasis — the slowing or stopping of normal gut movement — is the most common life-threatening emergency in pet rabbits. Understanding its signs, causes, and prevention can save rabbits' lives and prevent prolonged suffering.
GI stasis causes real and escalating suffering. The combination of gut pain from gas accumulation, dehydration, and the secondary effects of toxin absorption from abnormal fermentation creates a progressively worsening welfare emergency. Rabbits experiencing GI stasis typically adopt a characteristic hunched, immobile posture that conserves heat and protects the abdomen — they are uncomfortable and frightened. Because rabbits are prey animals who instinctively mask illness, these signs may be subtle enough to miss or attribute to "being quiet." The consequence of missed or delayed recognition is prolonged suffering that could have been prevented. The primary preventive measure — unlimited access to appropriate grass hay — is simple, inexpensive, and profoundly effective. The tragically high rate of GI stasis in pet rabbits is largely a product of feeding inappropriate diets (commercial pellets marketed as "complete" diets, fruit and vegetable treats displacing hay) and insufficient owner knowledge about rabbit physiology. Rabbits are not low-maintenance pets; they have complex dietary and behavioural needs that require informed, committed ownership.