Hutch alone or with a daily run: what rabbit cortisol reveals
Published by Planète Pets · managing editor: Clément Lacaille · how our guides are written
Is a comfortable hutch enough on its own, or does it need a daily run attached to it? Nicola Rooney, Paul Baker, Emily Blackwell, Melissa Walker, Siobhan Mullan, Rachel Saunders and Suzanne Held compared several setups across twenty pairs of neutered adult rabbits, crossing hutch size (0.73 or 1.86 m²) with the duration of run access, in a study published in 2023 in Applied Animal Behaviour Science. Our habitat guides are gathered in the rabbit bedding and habitat section.
Contents · 4 sections
Restricted access comes with a stress and rebound-activity cost
Pairs whose run access was limited to three hours a day showed higher faecal corticosterone than pairs with free access, plus a marked "rebound" behaviour: the moment the run door opened, they rushed out and strung together jumps and sprints far more intensely than pairs already used to free roaming. That rebound reflects an unmet need for movement built up during confinement hours, not simple enthusiasm.
Hutch size matters, but less than run access
The small hutch (0.73 m²) combined with restricted access stacked both stress factors; a large hutch didn't fully erase the effect of limited run access. In other words, a spacious hutch doesn't substitute for a sufficient daily run, but generous run access does soften part of the disadvantage of a more modest hutch.
What this means for a home setup
- The widest possible run access during the day, rather than a short, fixed window, reduces this rebound behaviour and the associated stress.
- An outdoor hutch is never enough on its own: our pointers on minimum hutch or enclosure size remain the starting point, to be paired with an attached run or daily free-roam time.
- Permanent hutch-to-run access, through a hatch left open whenever safety allows, best mirrors the most favourable conditions observed in the study.
Frequently asked questions
Is three hours of run access too little for every rabbit?
That's the duration that showed a measurable effect in this specific study; it doesn't set a universal threshold, but it's a reason to favour broader access whenever possible.
Does an indoor rabbit with free access to a room still count?
The principle still applies: a rabbit confined to a cage for most of the day, even indoors, benefits from free, extended access to a larger living space.
Does living as a pair change this result?
The study specifically covers pair-housed rabbits; the need for movement documented here adds to the need for companionship, it doesn't replace it. Find all our guides on the rabbit hub.
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