Which species cannot normally regurgitate or vomit?
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Horses cannot usually vomit or regurgitate. Place a nasogastric tube (NG tube) in horses with colic, or when excessive gastric gas or fluid accumulation is suspected, to relieve gastric distention and improve comfort.
Continued build-up of gastric fluid indicates abnormal intestinal motility (a.k.a. ileus), which can be due to a mechanical obstruction (e.g., strangulating lipoma) or a functional disorder (e.g., anterior enteritis).
