organ, and because deep anaesthesia may not be applied to cows. foreign body removal bottle top swallowed by a dog that had to be removed surgically a variety of non-edible objects are commonly swallowed by dogs, cats, and cattle. these foreign bodies can cause obstruction of the gastrointestinal tract causing severe vomiting and resulting electrolyte imbalances. the stomach (gastrotomy) or intestine (enterotomy) can be surgically opened to remove the foreign body. necrotic intestine can be removed (enterectomy) and repaired with intestinal anastomosis. foreign bodies can also be removed by endoscopy, which although requires general anesthesia does not require surgery and significantly decreases recovery time. however, endoscopic foreign body retrieval is anatomically limited to objects lodged in the esophagus, the stomach or the colon. the condition in cattle is known as hardware disease.