Pregnancy toxemia (ketosis) is a life-threatening metabolic emergency in does — most common in the final week of pregnancy or just after kindling — caused by negative energy balance that depletes blood glucose and floods the body with ketones. It can be fatal within 24–48 hours without immediate veterinary care.
Last reviewed: June 2026
What Is Pregnancy Toxemia in Rabbits?
Pregnancy toxemia occurs when energy intake fails to meet the demands of late pregnancy or lactation. When blood glucose falls too low, the body mobilises fat faster than the liver can process it, producing ketone bodies that cause metabolic acidosis and rapid organ failure. Does with large litters and obese does are at highest risk.
As described in Quesenberry & Carpenter's Ferrets, Rabbits & Rodents: Clinical Medicine and Surgery, the pathophysiology mirrors pregnancy toxemia in ewes — rapid fat mobilisation exceeding hepatic processing capacity — though management details differ. Any pregnant or recently kindled doe that suddenly stops eating must be treated as a potential emergency.
Recognising the Signs
Signs develop rapidly — sometimes within hours — and can resemble GI stasis at first glance.
Early signs:
- Sudden complete anorexia — the doe stops eating entirely, which accelerates the ketotic cycle
- Lethargy — weak, hunched, reluctant to move
Progressive signs:
- Muscle tremors and weakness — difficulty standing
- Rapid, shallow breathing (compensatory response to metabolic acidosis)
- Sweet or acetone-like smell on the breath — a classic and distinctive sign of ketonaemia
- Ataxia and neurological signs
Late signs (imminent death):
- Collapse and inability to stand
- Hypothermia
- Seizures
- Coma
The AEMV Pet Care Guides, 2024 note that pregnancy toxemia carries a guarded to poor prognosis without rapid intervention, and most deaths occur within 24–48 hours of clinical signs appearing.
Diagnosis and Treatment
Diagnosis:
- Blood glucose — hypoglycaemia is a central finding; rapid handheld glucometer test
- Urine dipstick for ketones — positive ketonuria in a pregnant doe with clinical signs is highly suggestive
- Blood chemistry and CBC — elevated liver enzymes, electrolyte abnormalities; confirms metabolic derangement
- Abdominal ultrasound — assesses fetal viability
Emergency hospital treatment:
- IV dextrose — corrects hypoglycaemia; the cornerstone of acute management
- IV fluid therapy — corrects dehydration and metabolic acidosis
- Assisted nutrition — syringe feeding Critical Care formula maintains caloric intake
- Emergency caesarean section or induction — if the doe is near term and fetal viability is uncertain; removing the fetuses eliminates the primary metabolic load
Prognosis is significantly better when treatment begins before collapse.
Prevention
- Maintain ideal body weight before breeding — obesity is the single biggest risk factor
- Provide unlimited grass hay throughout pregnancy and lactation
- Avoid stressful changes in environment or diet during the final 2 weeks of pregnancy
- Monitor food intake daily in late pregnancy — any reduction warrants an immediate vet call
The WSAVA Global Nutrition Guidelines, 2011 emphasise that adequate dietary energy during gestation and lactation is essential in small mammals to prevent metabolic emergencies.
When to See a Vet
Call your vet today if:
- Your pregnant or recently kindled doe has not eaten for more than 12 hours
- Your doe appears weak, hunched, or unusually quiet in late pregnancy
- You notice a sweet or acetone-like odor on your rabbit's breath
Go to the ER immediately if:
- Your doe is unable to stand, is trembling, or has collapsed
- Your doe is seizing or unresponsive
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Frequently Asked Questions
Can pregnancy toxemia happen in rabbits that aren't obviously pregnant? Yes. False pregnancy involves similar metabolic demands in some does. Obese does may also develop hepatic lipidosis from any cause of anorexia, even outside of pregnancy. Any doe that stops eating warrants urgent evaluation.
How much does treating pregnancy toxemia cost? An emergency exotic vet exam typically costs $100–200. IV fluids and glucose supplementation over a 24-hour hospitalization can run $400–900. Blood chemistry and urinalysis add $150–300. Emergency caesarean section, if needed, typically costs $800–2,000. Early treatment is far less expensive than managing a deteriorated doe.
What should I feed a pregnant doe to prevent toxemia? Unlimited grass hay (timothy, meadow, or orchard grass) is the dietary foundation. A moderate amount of leafy greens and small daily pellet ration is appropriate. Avoid starchy treats during pregnancy. Never restrict food intake in a pregnant or lactating doe.
Is pregnancy toxemia the same as GI stasis in rabbits? Both cause anorexia and lethargy. The key distinguishing features of pregnancy toxemia are the acetone breath smell, hypoglycaemia on blood testing, and positive urine ketones. Both conditions can occur simultaneously and both are emergencies in a pregnant rabbit.
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