Loss of Appetite in Rabbits

Pet rabbit eating
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Pet rabbits usually like to chew on everything they can get their teeth on. But what happens when your hungry bunny all of a sudden has a loss of appetite?

Reasons for a Loss of Appetite

Anorexia, according to the Merriam-Webster dictionary, is a "loss of appetite especially when prolonged." Rabbits get anorexia because of a variety of reasons but some of those reasons are more common than others.

The most common reason for a loss of appetite, or anorexia, in a rabbit is because of a gastrointestinal problem called ileus.

Ileus occurs when the normal peristalsis, or movement of the stomach and intestines to push food through the gastrointestinal tract, decreases or stops. Ileus is extremely dangerous in rabbits and can cause death if left untreated. But ileus is also usually due to another underlying problem.​

Reasons for ileus in a rabbit are usually due to pain or discomfort and include:

Symptoms of a Loss of Appetite in Rabbits

It may be obvious to you that your rabbit has a loss of appetite but sometimes it is harder to tell. If you aren't sure if your rabbit is eating then you can look for these signs and symptoms of anorexia:

  • Decrease or absence of fecal matter
  • Decrease in size of fecal matter
  • Change in texture of fecal matter (sticky, watery, harder, etc.)
  • Refusal to eat a favorite treat
  • Decrease in weight (get a baby scale to monitor your rabbit's weight)
  • Increase in leftover food
  • Decrease in activity
  • Teeth grinding (bruxism)

    Treating a Loss of Appetite in Rabbits

    Depending on the underlying cause of the anorexia, you may need to consult a veterinarian to get your rabbit eating again. If you are unsure of the reason for the loss of appetite first look over your rabbit for any obvious reasons of ileus (see above) or symptoms. Sometimes you can find why your rabbit isn't eating just by running through the list of reasons why they may have stopped. Overgrown incisor teeth (front teeth) are easy to see by lifting up your rabbit's lips, some tumors and abscesses are easily identifiable by stroking your rabbit and feeling a lump, nasal or eye drainage is easy to spot if there is drainage that isn't normally there (or your rabbit spends a lot of time wiping their face with their front paws and then has dirty front legs from the nose drainage), and by holding a mirror up to your rabbit's nose you can check to see if both nostrils are clear and creating condensation on it.

    If you aren't sure why your rabbit suddenly stopped eating and no recent environmental changes were made, start by getting some green mixed vegetable baby food and a syringe. Force feed your rabbit so that they do not go without food and to stimulate their gastrointestinal tract.

    If your rabbit goes too long without eating their intestines will fill with gas since the normal peristalsis has decreased or stopped. This gas is very painful and is the scariest part of ileus. After force feeding, encourage your rabbit to exercise and massage their belly to encourage their gut motility. Increase the amount of water your rabbit consumes to provide extra hydration by filling both a clean water bowl and a water bottle for your rabbit to drink from. Syringe water or an electrolyte solution (such as unflavored Pedialyte) to your rabbit until they are defecating normally. If your rabbit is still eating a little bit, make sure you are offering greens with higher water content such as lettuce and celery to increase water intake as well as lots of hay. Avoid feeding rabbit pellets at this time.

    Taking Your Rabbit to the Vet for a Loss of Appetite

    It may not seem like a big deal if your dog, cat, or other pet skips a meal but if a rabbit does it may be an indication of an emergency situation. Rabbits that stop eating for even just a day are in a life-threatening situation and require immediate veterinary attention. Your exotics vet may recommend IV fluids or another form of hydration and medications for pain, gas production, gastric motility, and other concerns. Force feeding with veterinary grade products such as Oxbow Critical Care or Emerald Intensive Care Herbivore will probably commence providing the nutrition your rabbit needs while they aren't eating normally.

    Diagnosing Why Your Rabbit Has a Loss of Appetite

    If your rabbit has to pay a visit to the veterinarian for a loss of appetite the doctor may try to figure out why your rabbit stopped eating to begin with. Sometimes this isn't easy to do and requires laboratory testing, radiology, ultrasonography, and a thorough physical examination. Since there are so many different reasons why a rabbit may lose their appetite there are also several different tests to diagnose the cause (or causes) of it. A dental examination, blood tests, urine tests, fecal tests, radiology (x-rays), and other diagnostics may be recommended by your vet to aid in the diagnosis of your rabbit's loss of appetite and subsequent ileus.

    If testing is limited or not practical (either due to the poor health of your rabbit or financial constraints) then symptoms can be treated aggressively with fluids and medication but the anorexia may return depending on what the root cause was.

    Preventing a Loss of Appetite in Your Rabbit

    While most diseases that cause your rabbit to stop eating are completely preventable, there are many things you can do to aid in your rabbit's continued appetite. 

    Make sure you provide your rabbit with unlimited grass hays (not alfalfa) and leafy greens, fresh drinking water in a bowl, a clean and protected place to sleep, and a stable environment free of fluctuating temperatures and stressors.