Most pet rabbits are not dying of old age; they are burning out under chronic stress and failing guts. In the wild, a rabbit’s body is tuned to stay half a heartbeat from panic, and that same physiology follows it into the living room cage.
As prey animals, rabbits run on a high sympathetic nervous system load and delicate gastrointestinal motility. When they cannot sprint, dive into cover or grind down teeth through constant chewing, cortisol stays high, peristalsis slows and the risk of gastrointestinal stasis climbs. This is not just behavior; it is a systems problem built into their basal metabolic rate and fermentative digestion in the cecum.
Many owners try to buy their way out with premium pellets, supplements and elaborate treats. Yet without continuous access to a secure runway, bolt holes and chewable material, those investments have poor marginal effect. The gut microbiota cannot stabilize if the animal is too anxious to eat, and no formula can override a body convinced a predator is near every minute.
The most effective life‑extension strategy, say welfare researchers and exotic‑veterinary clinicians, is to design housing and routines around that prey template: long, predictable territory to move through, multiple hiding points, and legal chewing targets that keep teeth and gut in motion. Life for a rabbit stretches when its environment finally matches the threat level written into its bones.
