Many dogs and cats have a habit of eating things that they shouldn't. Dogs like to ingest toys, shoes, sticks, and rocks. Cats tend to have linear foreign bodies; they ingest strings and ribbon. This is especially dangerous because it causes the intestines to fold on themselves like an accordion, cutting blood supply to that section of bowel. In these cases that section of bowel could die and need to be removed during an emergency surgery.
Smaller objects ingested by pets may pass on through but larger objects may become obstructed or cause lacerations in the intestinal tract. These items need to be surgically removed.
According to Dog Fancy Magazine (March 2008) the top 10 objects removed from the intestinal tract, in order, is:
The fact is this type of intestinal problem can be avoided. To avoid intestinal foreign bodies follow your mother's advice and pick up your toys.
The symptoms for a foreign body include but are not limited too; vomiting, not eating, tense stomach/abdomen, and fever. In more severe cases the pet will go into shock and symptoms will include pale gums, collapse, and death. Some pets may try to eat or drink but will immediately vomit the food and water.
If you suspect your pet has an intestinal foreign body contact your veterinarian immediately for further tests. Don't try first aid at home. Waiting on this type of emergency only makes the situation worse by causing the blocked intestine to become necrotic. This may cause your pet to go into shock and possibly die.
Sources: Personal experience, see Bio
Dog Fancy Magazine, March 2008