Rabbits and guinea pigs
Dental disease, urinary pain, respiratory disease, reproductive disease, obstruction, altered motility, infection and other pain are important possibilities.
RABBITS & SMALL MAMMALS · URGENT SIGNS
Why rabbits, guinea pigs, ferrets and hedgehogs that stop eating need prompt species-experienced veterinary assessment.

TIME MATTERS
Reduced appetite may be the first visible sign of serious disease. In rabbits and guinea pigs, reduced fiber intake can worsen gastrointestinal movement; in ferrets and hedgehogs, low intake may accompany obstruction, infection, organ disease, pain or cancer.
Dental disease, urinary pain, respiratory disease, reproductive disease, obstruction, altered motility, infection and other pain are important possibilities.
Foreign material, gastrointestinal disease, insulinoma, infection, adrenal or other systemic disease may reduce appetite.
Dental disease, infection, organ disease, tumors, inappropriate temperature and other husbandry or medical problems may contribute.
A small mammal may sniff food, take one treat, or carry food away while still consuming too little overall. Check measured intake, output, weight, and normal activity. Dental pain, digestive problems, and other illness can have similar early signs. Species determines the safe feeding response and urgency. Do not force-feed before obtaining advice if obstruction, severe weakness, or impaired swallowing may be present.
Give the care team the species, main change, start time, associated signs, possible exposures, and current medicines. Describe whether the animal can breathe comfortably, respond, stand, and pass urine when relevant. The team can then advise on safe handling and transport. Bring packaging or records if readily available, but do not delay care to find every detail. Call ahead when practical, and confirm that the service can care for the species and the kind of emergency involved.
The most useful home observations compare an animal with its own usual pattern. Record intake, output, weight where practical, activity, and comfortable function at consistent times. Normal variations differ between species and life stages. A brief record can reveal a trend that is difficult to remember accurately or reproduce during an appointment. It also helps assess treatment response. Sudden serious changes still need immediate advice; collecting a perfect record should never delay care.
Drug name, strength, amount, route, interval, and patient identification must all agree with the current written plan. Liquid concentration is especially important because a different strength changes the volume required. Use the prescribed measuring device and a shared log to avoid duplicate administration. Ask for a demonstration if the route or handling is unfamiliar. When a label conflicts with what you remember from a conversation, clarify with the team before guessing; small wording or measurement differences can change the actual dose substantially.
The part of a tooth visible above the gum is only part of its structure. Problems may involve roots, supporting bone, hidden surfaces, or neighboring tissues. A quick look in an awake animal's mouth may not reveal all of these areas, especially when the mouth is painful or the species has hard-to-see cheek teeth. A complete assessment may require sedation or anesthesia and appropriate imaging. Continuing to eat does not establish that the mouth is comfortable or that a dental problem is minor.
Digestive signs describe what the animal is doing, rather than a single disease. The problem may be in the digestive tract itself or may reflect pain, metabolic illness, toxins, or another body-wide condition. Fluid loss and reduced food intake can become important complications even before the exact cause is confirmed. The investigation considers the timeline, diet, access to foreign material, stool output, and other signs. This helps distinguish a problem that may respond to medical support from one that needs urgent intervention.
A feeding plan should account for the actual food eaten, not just the amount offered. Selective eating, dropped food, hidden leftovers, and competition can make intake difficult to judge. Record the food type, measured portion, treats, and any supplements so the team can assess the complete diet. A disease-specific diet or assisted feeding may be recommended in some cases, but force-feeding is not a safe default for an animal that cannot swallow normally or may have an obstruction.
TRUSTED SOURCES
Source links are provided so readers can review the underlying guidance. Publication dates and recommendations can change; confirm individual plans with the treating veterinary team.