Rabbit Mastitis Emergency: Painful Swollen Mammary Glands in Nursing Rabbits

Mastitis hurts. Affected glands are often warm, firm, enlarged, and very tender. Because rabbits hide illness, a doe may look only a little quieter at first, then suddenly stop eating, stop producing normal fecal pellets, or become weak. That combination of pain, stress, and reduced food intake can push a rabbit into gastrointestinal stasis fast.

It is also an emergency because the kits depend on the doe for milk. If a gland is infected, milk production may drop, nursing may become painful, and the kits may cry, lose weight, or become chilled and dehydrated. Severe infection can lead to abscesses, tissue damage, or bloodstream infection.

• One or more mammary glands that are swollen, red, hot, hard, or painful
• Milk that looks abnormal, including blood, pus, or watery discharge
• The doe avoiding the nest box or refusing to let kits nurse
• Decreased appetite, fewer fecal pellets, hiding, tooth grinding, or lethargy
• Fever, dehydration, or a gland that looks dark, ulcerated, or ready to rupture
• Hungry, restless, weak, or poorly growing kits

Most septic cases are caused by bacteria entering the teat or damaged skin during lactation. Small scratches from kits' nails, rough bedding, damp nesting material, and poor sanitation can all increase risk. Heavy milk production can also put more stress on the glands.

Published rabbit references describe Staphylococcus aureus as a common cause, with Pasteurella and Streptococcus species also reported. Less commonly, rabbits can develop cystic mammary disease, which is different from acute bacterial mastitis and may need a different workup.

Your vet will usually start with a hands-on exam and may recommend cytology or culture of discharge, bloodwork if the rabbit seems systemically ill, and sometimes imaging if an abscess, retained milk, or deeper tissue involvement is suspected. Because rabbits are sensitive to some antibiotics, treatment should always be chosen by your vet.

Common treatment goals are pain control, hydration support, rabbit-safe antibiotics, wound care if the gland is draining, and nutritional support if appetite is down. If the doe cannot nurse safely, your vet may discuss fostering kits to another lactating doe or temporary hand-feeding support.

Conservative care
Typical cost range: $180-$450
Includes: exam, basic assessment of hydration and temperature, rabbit-safe pain relief, empiric rabbit-safe antibiotic chosen by your vet, home monitoring instructions, and a short recheck.
Best for: early, localized cases in a bright rabbit that is still eating and has no sign of severe systemic illness.
Prognosis: often fair to good when started early and followed closely.
Tradeoffs: lower upfront cost, but there is more uncertainty without culture or imaging. If the gland worsens, ruptures, or appetite drops, care may need to escalate quickly.

Standard care
Typical cost range: $450-$1,000
Includes: exam, pain control, rabbit-safe antibiotics, cytology or culture of discharge when available, fluids if needed, assisted feeding plan, kit support plan, and 1-2 rechecks.
Best for: most rabbits with obvious mastitis, moderate pain, reduced appetite, or concern for poor milk transfer to kits.
Prognosis: good in many uncomplicated infections treated promptly.
Tradeoffs: more diagnostics and follow-up improve decision-making, but cost and handling are higher.

Advanced care
Typical cost range: $1,000-$3,000+
Includes: hospitalization, injectable medications, bloodwork, imaging, culture, abscess management, sedation or anesthesia for procedures, intensive nutritional support, and in selected chronic or severe cases surgery such as debridement or mastectomy with or without spay.
Best for: severe infection, abscessation, tissue necrosis, recurrent disease, systemic illness, or a rabbit that has stopped eating.
Prognosis: variable; many rabbits improve with aggressive care, but delay increases risk to both doe and kits.
Tradeoffs: highest cost range and more intensive intervention, but may be the safest path for complicated cases.

Keep the doe warm, quiet, and in a clean enclosure with soft, dry bedding. Do not squeeze the gland, lance it, or apply human creams or leftover antibiotics. Offer fresh hay and water right away, and note the last time she ate normally and passed fecal pellets.

Watch the kits closely. If they seem cold, wrinkled, weak, or persistently hungry after nursing attempts, tell your vet immediately. If your doe has not eaten for about 8-12 hours, has very few or no fecal pellets, or seems weak or collapsed, seek urgent rabbit-experienced veterinary care the same day.

Good nest hygiene matters. Keep bedding dry, reduce abrasive surfaces, and check the mammary glands daily during lactation for heat, swelling, or discharge. Trim sharp points in the environment that could traumatize teats, and ask your vet how often to weigh the kits if there has been a nursing problem.

If mastitis recurs, your vet may recommend a broader workup for chronic infection, cystic mammary disease, or reproductive disease. For rabbits not intended for breeding, discussing spay timing with your vet may also be part of long-term planning.