Mog

Mog is a name that appears in different contexts. In literature, Mog the Forgetful Cat is the best-known character with this name. Created by Judith Kerr, Mog is a domestic cat living with a British family in a series of children's books beginning with Mog the Forgetful Cat (1970). The stories, told with gentle humor, follow Mog’s everyday experiences, mishaps, and moments of affection within the family setting. The series has become part of mid-to-late 20th century British children's literature and has remained popular in various countries.

In science, MOG is an acronym for myelin oligodendrocyte glycoprotein, a protein on the surface of myelin in the central nervous system. Antibodies against MOG (MOG-IgG) are associated with a spectrum of inflammatory demyelinating diseases, collectively called MOG antibody-associated disease (MOGAD). Clinical features can include optic neuritis, myelitis, or brainstem syndromes, and the condition is distinguished from multiple sclerosis and aquaporin-4–positive neuromyelitis optica by antibody testing and imaging. Diagnosis and treatment should be guided by medical professionals, as the disease course and response to therapies can differ from other demyelinating disorders.

Beyond these uses, Mog can also appear as a personal name or nickname and may be encountered in various cultural contexts. The meaning of the term is therefore highly context-dependent.