What to Feed a Newborn Wild Rabbit (Almost Always: Nothing)

Feed a newborn wild rabbit nothing. Not cow's milk, not kitten milk replacer, not goat's milk, not diluted formula or sugar water — nothing, not one drop from a dropper. If the kit is uninjured and in or beside a nest, put it back, leave, and check the nest 24 hours later. If it is injured, cold, or was in a cat's or dog's mouth, keep it warm, dark and quiet and phone a licensed wildlife rehabilitator first.

That answer disappoints almost everyone who searches for it, so here is the reasoning. Veterinary guidance for orphaned native wildlife is explicit: warmth and hydration come first, and a cold or dehydrated neonate must be warmed and rehydrated before any food. Feeding one that is not ready causes regurgitation, aspiration pneumonia and diarrhoea.

The second reason is that the animal is probably not orphaned. Wild does deliberately leave the nest unattended all day, returning once or twice in 24 hours for a feed lasting about five minutes. An empty-looking nest at two in the afternoon is what a healthy, actively nursed nest looks like.

• Nothing by mouth: no milk, no water, no formula, no greens, until a rehabilitator says otherwise.
• Warmth and fluids come before food, and the fluids are the permit-holder's call.
• Do not move a nest you could leave in place, and do not keep the animal "for a few days".
• Phone before you drive: your wildlife authority, a rehabilitator, or a vet who knows who holds a permit.

The standard field test is a crosshatch. Lay four thin twigs, dry grass stems or lengths of light string over the nest in a noughts-and-crosses grid, resting on the surface rather than pressed into the soil, and come back after a full 24 hours. If the pattern has been pushed aside, the doe has been in: replace the cover and walk away. If it is untouched after 24 hours, that is the moment to call a rehabilitator.

The 24 hours matter more than the twigs. A cottontail doe nurses once or twice a day, near dawn and dusk, for a few minutes; for the domestic rabbit the FAO figure is a single feed per 24 hours. A check made at first light, or after half a day, can fall between two visits, and a well-fed nest then reads as abandoned. The Wildlife Center of Virginia publishes a 12-hour version; Tufts Wildlife Clinic and the House Rabbit Society specify 24. Take the longer reading.

• Use something a doe can displace: thin twigs, dry grass, wool or light string — never a weight or anything pegged down.
• Do not press the crosshatch into the soil, or she may nurse without disturbing it.
• If you opened the nest, rebuild it: grass, then the doe's fur cap, then the pattern.
• Keep cats and dogs off that ground for the whole 24 hours.
• Do not handle the kits between checks and do not sit and watch — a doe will not approach with a person nearby.

Many "rescued" wild rabbits were never in trouble: they were juveniles that had left the nest on schedule. Tufts Wildlife Clinic's threshold is concrete — a rabbit about 10 cm (4 in) long that hops well, with eyes open and ears erect, is independent of its mother and should be left alone. The Wildlife Center of Virginia frames the same judgement by bulk: fully furred, eyes open, bigger than a softball, over roughly 100 g (4 oz).

The "size of a tennis ball" rule circulating online is neither threshold, and it describes a smaller animal than both — a tennis ball is about 6.7 cm across, against a softball at roughly 9.7 cm and Tufts's 10 cm body length. Using it as your cut-off means lifting nestlings that should have stayed put. Judge on all four markers together; if two are missing, treat the animal as a nestling.

• Eyes open: day 4–7 (US Forest Service) or day 4–5 (Animal Diversity Web) — a sealed-eyed kit belongs in a nest.
• First trips out of the nest: 12–16 days.
• Weaning: 16–22 days; Virginia's wildlife agency calls cottontails independent at 2–3 weeks.
• Fully independent: 4–5 weeks, when the family group breaks up.
• Field call: ~10 cm body, confident hopping, eyes open, ears erect, over 100 g — leave it alone.

A cottontail nest is not a burrow and barely counts as a structure. It is a shallow scrape — the US Forest Service gives an average of about 18 cm long, 12.6 cm wide and 11.9 cm deep — lined with grass and leaves, then capped with fur the doe pulls from her own belly. Does site them in mown lawns, playing fields and flower beds, because short open grass gives a clear view of an approaching predator.

Her absence is the strategy, not a failure of it. An adult sitting on a surface nest all day signposts it to every fox, crow and cat nearby, so she stays away and returns briefly in low light.

None of which means the odds are good. Virginia's wildlife agency estimates only about half of cottontails survive long enough to leave the nest, and about half of those are dead by autumn; the Forest Service puts annual adult survival near 20%. Those figures get quoted as a reason to intervene. They are the reason not to: they are the baseline hand-rearing has to beat, and it does not come close.

• Nest: a scrape roughly 18 × 13 × 12 cm, lined with grass and the doe's belly fur.
• Location: open lawn, sports field, flower bed, mulch, rough grass at a field edge.
• Occupancy: two to three weeks from birth to dispersal. Mow around it and the problem solves itself.
• Adult present: almost never in daylight. Absence is not evidence of abandonment.

The commonest error in online guidance is treating "baby rabbit" as one animal. It is at least four, and the right answer differs for each — including whether it is even the same species as a pet rabbit.

The species question decides the milk question, and this is where published numbers get borrowed across a boundary they do not cross. The FAO rabbit manual gives domestic rabbit milk as 26.1–26.4% dry matter, 13.2–13.7% protein, 9.2–9.7% fat and 0.86–0.87% lactose, against cow's milk at 13% dry matter, 3.5% protein, 4% fat and 5% lactose. Both are Oryctolagus figures, as is the 2020 Hycole study's 27.6–29.0% total solids. Cow's milk carries a fifth of the solids, a quarter of the protein and roughly five times the lactose.

For the brown hare there is one published comparison: Lhuillery and colleagues found dry matter, fat and protein broadly similar to rabbit milk, but a different fatty-acid profile and different calcium, phosphorus and potassium. For the eastern cottontail no comparable composition appears in any source cited here — which is the point. Nobody can hand you a verified cottontail formula; pages that print one are reprinting domestic-rabbit or kitten figures.

• Eastern cottontail (Sylvilagus floridanus), North America — a different genus from every pet rabbit, born blind and naked at 25–35 g in a surface scrape.
• European rabbit (Oryctolagus cuniculus) — genuinely the same species as every pet and farm rabbit, but a wild-born kit in a burrow is still wildlife under national law.
• Brown hare leveret (Lepus europaeus) — born fully furred with open eyes, left alone in a form and suckled once a day at dusk for four weeks. A leveret alone in a field is not abandoned.
• Escaped or dumped domestic kit — usually given away by a hutch, shed or nest box rather than a scrape.

In the United States this is not a grey area. Washington's Department of Fish and Wildlife states that outside a narrow set of exceptions, possessing wildlife is illegal, and that a rehabilitation permit is what authorises someone to hold injured, sick, orphaned or abandoned wildlife until release. Tufts Wildlife Clinic puts it the same way, and the MSD Veterinary Manual notes that permits are required even of veterinarians beyond initial medical treatment.

In Germany the rule sits in the federal nature conservation act. Section 45(5) of the Bundesnaturschutzgesetz permits taking in an injured, helpless or sick animal to nurse it back to health — but expressly subject to hunting-law provisions, and it requires release without delay once the animal can support itself. Both the European rabbit and the brown hare fall under German hunting law, so that reservation is not decorative.

Elsewhere in Europe the pattern is the same shape rather than identical in detail: hare and wild rabbit are usually handled under national hunting legislation rather than general animal-welfare law. Check your own country's rules, and assume by default that you may not keep it.

• Default assumption: you may not keep, rear or release a wild rabbit or hare yourself.
• The permit exists so somebody competent can hold the animal lawfully — handing it over is the legal route, not a defeat.
• Posting photos of a wild kit you are keeping is how many people discover their jurisdiction enforces this.

The House Rabbit Society's figure for orphaned wild rabbits taken in by the public is that fewer than 10% survive a week. It deserves reading without softening: nine in ten kits lifted off a lawn are dead within seven days, and most die of the care rather than of whatever was supposedly wrong.

The failure modes are documented and consistent. A chilled neonate is fed before it is warm and aspirates. A dehydrated one gets a formula it cannot digest and develops diarrhoea it cannot survive. One that was never orphaned loses the only feeding schedule that would have worked.

Set against that, leaving an uninjured kit in a real nest gives it the wild baseline: roughly a coin flip on reaching the point where it leaves the nest. A coin flip beats one in ten by a wide margin, and it asks you to do nothing. That asymmetry is the whole argument of this page.

• Hand-reared by the public: fewer than 10% survive the first week.
• Left in an intact nest: about 50% survive to leave the nest, per Virginia's wildlife agency.
• What most often kills: feeding before warming, cow's milk or kitten formula, and removing a kit that was never orphaned.

Find the rehabilitator before you find a box. Your wildlife agency keeps a list, and the House Rabbit Society points finders at the national rehabilitators' directory. A local veterinary practice usually knows who holds the permit even if they cannot take the animal. Ring first, because many of these calls end with "put it back and read the twigs tomorrow".

If the answer is bring it in, the goal for the intervening hours is a warm, dark, silent, empty animal. Everything that feels like care — checking, stroking, photographing, offering a dropper — is a stressor to a prey species that has never met a human; handling, noise and eye contact are all flagged as harmful.

Tell the rehabilitator two things finders forget. First, exactly where you found it: releases happen where the animal came from, and re-nesting may still be the plan. Second, anything you already gave it, how much and when.

• Ventilated cardboard box with a lid, lined with smooth cloth — not terry towelling, whose loops catch claws.
• Warm gently from one end only, so the kit can move away from the heat.
• Dark, quiet, away from people, pets, children and television.
• No food. No water. No dropper.
• Mark the find spot, and do not open the box to check, photograph or show anyone.
• Say on the phone if a cat or dog had it in its mouth: that is a puncture-wound case, not an orphan case.

None of the above applies if what you have is a domestic kit. If the nest is in a hutch, shed, garage or a nest box the doe was given, you are looking at Oryctolagus cuniculus in a husbandry situation rather than wildlife: no permit question, no rehabilitator, feeding protocols that genuinely exist, and much better odds. Our guide to feeding newborn domestic kits covers that case.

The tells are circumstantial rather than anatomical, because a two-day-old kit of any of these species is a pink, blind, near-identical object. A nest in a container rather than a scrape, a doe you can see and approach, a coat colour that does not occur in the local wild population, or an enclosure somebody built — any of these points to domestic.

• Domestic: nest box or hutch, doe visible and approachable, non-wild coat colours, human-built enclosure.
• Wild: fur-capped scrape in open ground, no adult present by day, agouti-brown coat once furred.
• Unsure: treat it as wild and ring a rehabilitator — the mistake is cheaper in that direction.