«The human body has developed an advanced form of protection against bacteria, viruses and other foreign bodies that relies on the immune system. (sciencedaily.com)
Left untreated, foxtails and other foreign bodies that make their way into the ear can cause secondary infection, as well as damage the dogs inner ear and ear drum, in addition to causing severe pain. (professorshouse.com)
Irritants in the eye such as dirt, sand, hair or other foreign bodies are often a cause of cat conjunctivitis. (best-cat-art.com)