It is suggested that when you first adopt your rabbit, you give them some water or something they like in an oral (needleless) syringe. This will get them used to assisted feeding so it won’t be something horrible and new when they need medication.
If your rabbit stops eating, your veterinarian may suggest that you “manually” or “syringe” feed your rabbit as part of a treatment plan. This just means that you’re making some kind of food mixture and giving it to your rabbit through a big syringe. Your veterinarian may provide you with a powdered herbivore food supplement such as Critical Care, which will be reconstituted in warm water, or provide you with a recipe to make a homemade pellet slurry. Your rabbit may be very calm about this procedure at the veterinarian’s office. Chances are, they’ll throw quite a fit when you try it at home. As a general rule, a rabbit that fights syringe feeding is likely not sick enough to need it.
Syringe feeding is really an art and a science, and it takes practice, patience, and creativity to figure out how to do it. Nevertheless, we swear it can be done and doing so can make the difference between life and death. HRS never recommends just starting syringe feeding to any rabbit that is not eating without a veterinarian’s physical examination, possibly radiographs, and ensuring it is appropriate timing.