Eastern
Cottontail
⚠️ High Stress Species — Minimize Handling at All Times
Cottontails are extremely stress-sensitive. Capture myopathy can be fatal even hours after handling — the animal may appear fine but die from internal stress. Always work quickly, quietly, and with minimal contact. As animals approach release weight, reduce handling to essential care only. Never hold a cottontail longer than necessary.
Transition from TID to BID feedings once eyes open and animal is stable.
Introduce juvenile diet alongside formula. Continue formula until consistent self-feeding observed.
Off formula, gaining weight for 5 consecutive days. Consult sponsor for confirmation before release.
Before deciding how to help, identify the cottontail’s stage. This determines whether intervention is needed and what care is appropriate.
Eyes and ears closed. Barely any fur — looks like tiny baby hippos. Purple/bloated appearance.
Needs rehabber TID formula onlyEyes closed, ears back. Fur starting to come in. No longer looks like a hippo baby.
Needs rehabber BID formula + greensEyes open. Ears back. Fur coming in. Beginning to “popcorn” and be reactive.
Transitioning BID formula + juvi dietEyes open. Ears up. Fully furred. Looks like a tiny adult. Very reactive — HIGH STRESS.
Near release Adult diet / solids
A real cottontail nest — a shallow depression lined with grass and the mother’s own belly fur, concealed among leaves and ground cover.
The milk line — a visible pale stripe on the belly — indicates the baby has recently been fed by mom.
🪺 Identifying a Cottontail Nest — It Can Be Hard!
Cottontail nests are shallow depressions in the ground, meticulously constructed with soft plant material and lined with fur pulled directly from the mother’s own belly. They are designed to be hidden in plain sight — in lawns, gardens, and fields — making them easy to stumble across and hard to spot intentionally. The soft fur lining is the key identifier.
Every effort should be made to locate a nest before assuming a baby is orphaned. Cottontails are crepuscular — mothers only visit the nest at dawn and dusk. A nest that appears untended during the day is almost certainly not abandoned.
Answer each question to get a recommended course of action. This mirrors the A.E.R.O. field assessment flowchart — adapted for volunteer use.
Check for: bleeding, broken limbs, open wounds, inability to move, seizures, or any contact with a cat or dog. Cat saliva carries bacteria fatal to rabbits — even a single puncture requires immediate veterinary care with antibiotics.
🏥 Send to Rehabber / Vet Immediately
Contact the closest WRL-permitted rehabber or vet right away. Keep the animal warm (uncooked rice in a sock, microwaved 20 seconds until warm to cheek) and dark during transport. Do not give food or water. Do not delay — every minute matters with cat bites especially.
A.E.R.O. Intake: aeroanimalrescue.org
Use the stage chart above to identify what you have. Key indicators: ear position (flat vs. up), eye status, fur coverage, and overall size compared to your fist.
Baby cottontails found outside the nest should be returned immediately — do not give food or water. Find the nest (a shallow fur-lined depression nearby) and place the baby back. Then use the string/twig method to monitor whether mom returns.
A fist-sized juvenile cottontail with ears up is likely independent enough to survive on its own. Healthy juveniles are wary and fast. If it’s in a safe area and behaving normally, it almost certainly does not need help.
🪺 Return to Nest & Monitor with String/Twig Test
1. Return the baby to the nest without handling more than necessary.
2. Lay a grid of string or twigs lightly across the top of the nest, or sprinkle a thin line of flour around the nest perimeter.
3. Leave the area completely. Check after dusk and before dawn — mothers feed only at twilight.
4. If the string/twigs are disturbed or flour shows prints, mom has been back. Do not intervene.
5. If the string/twig or flour is undisturbed after two dawn/dusk cycles, contact A.E.R.O. — mom may not be coming back.
🌿 Move Carefully to a Safer Spot Nearby
Move the juvenile to the nearest safe location — under a bush, away from traffic or pets. Do not chase it; stress can be fatal. Move it gently and quickly, then leave. A fist-sized cottontail does not need to be taken in — it is mature enough to survive on its own once the immediate danger is removed.
🚫 Do Not Intervene
This juvenile is mature enough to be on its own. A fist-sized cottontail with ears up is independent. Leave it alone — unnecessary capture causes extreme stress and can be fatal. If you are unsure, observe from a distance for 30 minutes before calling.
This is almost certainly a domestic rabbit, not a wild cottontail (the “Bunnicula” scenario from the flowchart). Wild adults surrounded by pale vegetables likely belong to a nearby home. Confirm whether it is wild or domestic before deciding next steps.
🥦 Sacrifice the Vegetables
This is a domestic or well-fed wild rabbit with access to a food source. It does not need intervention. You may, however, consider sacrificing the remaining vegetables to the rabbit as tribute. No further action required.
…maybe try some Cheez-Its?
🚫 Do Not Intervene
A wild adult cottontail that is alert, mobile, and not injured does not need help. Leave it alone. If it appears ill, injured, or is behaving abnormally (circling, unable to flee, lethargic), contact A.E.R.O. for guidance.
🌡️ Warmth Protocol
For cold or newly admitted animals: fill a clean sock with uncooked white rice, microwave 20 seconds, and test warmth against your cheek. Place under a cloth in the bottom of the enclosure — the animal rests on top. Re-heat every 30–45 minutes. Never place a cold animal directly on heat.
🧤 Handling Reminders
Always use soft gloves or a cloth when handling — bare skin transfers scent and increases stress. Keep handling to the absolute minimum. Work in a quiet, dimly lit space. Never handle a cottontail near loud noises, other animals, or in direct sunlight.
⚠️ Capture Myopathy — A Reminder
Cottontails can appear healthy and die hours later from the physiological effects of extreme stress. This is called capture myopathy — a breakdown of muscle tissue triggered by stress hormones. It is irreversible once it occurs. The single most important thing you can do for a cottontail in care is to minimize every handling interaction, work quickly and quietly, and keep the animal in a dark, covered, quiet enclosure at all times when not being fed.
