In addition to intussusception, other items can obstruct normal flow through the gut and result in clinical signs, such as lethargy, vomiting, and black, tarry stools, and abnormal posture.
Swallowed foreign bodies (such as bones, rubber balls, and stones), tumors, fungal infections, and herniations are all capable of causing either partial or complete obstructions if large or extensive enough.
Unless the obstruction is relieved in a timely fashion, usually through surgical means, loss of blood supply to the affected portion can occur, resulting in the death of that portion of bowel, systemic infection, and shock.