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⚠️ Medical information: This article is for general educational purposes and is not a substitute for professional veterinary care. Always consult a rabbit-savvy veterinarian for health concerns. See our full disclaimer.
Critical Care Feeding Guide
Step-by-Step Syringe Feeding for Rabbits
Critical Care is a powdered recovery food for herbivores — the most trusted brand is Oxbow Critical Care. When your rabbit stops eating on their own, syringe feeding helps keep the gut moving while you address the underlying problem. This guide covers preparation, portion sizes, technique, and timing.
⚠️ When to Use This Guide
Use critical care feeding only when your rabbit has stopped eating or is eating significantly less than normal. If your rabbit is still eating something — even a small amount — do not force-feed until you have consulted your vet. For rabbits showing signs of GI stasis (no droppings, distended belly, lethargy), call your vet before starting any feeding.
What You Need
Step 1: Mix the Formula
Ratio: 1 part powder to 1.5 parts water. For a typical feeding, use 1 level scoop of powder and 1.5 scoops of water.
Consistency: The mixture should be the thickness of a smoothie — liquid enough to draw into a syringe but not so watery that it flows out on its own. If it is too thick, add water a few drops at a time.
Fresh each time: Mix only what you need for the current feeding. Critical care spoils quickly at room temperature — do not mix a batch for the whole day.
Pro tip: Some rabbits prefer the mixture made with lukewarm water (slightly warm to touch) as it has less of an unfamiliar temperature difference.
Step 2: Prepare the Syringe
Draw the mixture into the syringe slowly. Tap the syringe barrel gently to release any air bubbles — air bubbles cause inaccurate dosing.
If the syringe plunger is stiff, run it under warm water for a few seconds to loosen it.
Position the syringe: Hold it with the tip pointing up. Advance the plunger slightly until a small drop appears at the tip — this confirms the mixture is ready to deliver.
Step 3: Position Your Rabbit
The safest position for syringe feeding is having your rabbit upright, not lying on their side. Lying on the side increases aspiration risk.
Option A — Upright on your lap: Sit in a chair with your rabbit cradled in your lap, hindquarters supported against your body. This is the safest for conscious rabbits.
Option B — On a non-slip surface: Place your rabbit on a towel on a table. Keep them upright with their bottom against a rolled towel or your hand behind them.
Never: Force a rabbit onto their side. Never tilt their head back — this increases aspiration risk.
Step 4: Feed
Place the syringe tip in the gap between the front teeth and the cheek, angled slightly toward the tongue. The key is to aim for the center of the mouth, not the throat.
Advance the plunger slowly — about 0.5mL at a time. Let your rabbit swallow between each small amount. If they resist, pause and try again.
Do not rush. A 60mL syringe should take 5-10 minutes to empty. If you go faster, your rabbit will panic and may aspirate.
Watch for: Paste coming out of the nose — this means you pushed too fast or hit the wrong angle. Stop immediately, let the rabbit clear their nose, and resume more slowly.
Step 5: After Feeding
Once you have finished feeding, gently stroke your rabbit's throat area to encourage swallowing.
Offer a small piece of hay — chewing after feeding helps move the mixture through the gut and resets the normal swallowing pattern.
Clean the syringe immediately with warm water — critical care dries hard and makes the syringe unusable if left too long.
📏 Feeding Amount Guide
These are general guidelines for healthy adult rabbits. For sick, young, or senior rabbits, follow your vet's specific recommendations. Do not exceed 50mL per feeding — excessive volume causes gastric distension.
Common Mistakes to Avoid
Force-feeding everything in 2 minutes is the most common error. Slow, measured feeding prevents aspiration.
Cold mixture can shock a rabbit's sensitive digestive system. Use room temperature or slightly warm water.
If your rabbit is unresponsive, they cannot swallow safely. Seek emergency vet care — they may need a feeding tube placed.
A paste that is too thick will clog the syringe and require excessive pressure to deliver — which can force formula into the lungs.
Rabbits can swallow air during syringe feeding, causing painful gas. Gently stroke the throat after each feeding.
Signs Your Rabbit Is Starting to Eat Again
- Droppings return to normal size and frequency (6+ hours without feeding, they will be small or absent)
- Active chewing on hay — even if they do not eat much, the chewing motion is a good sign
- Interest in fresh vegetables or herbs when offered
- More energy and movement around their space
When your rabbit begins eating voluntarily, reduce critical care feeds gradually — do not stop suddenly. Reduce the amount by half each day while monitoring droppings.