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It is responsible for [[Infectious Necrotic Hepatitis|Infectious necrotic hepatitis/black disease]], which is an acute disease of sheep, and cattle.  Hepatic necrosis is caused by exotoxins of ''C. novyi'' type B in liver damaged by ''Fasciola hepatica''.

It is responsible for [[Infectious Necrotic Hepatitis|Infectious necrotic hepatitis/black disease]], which is an acute disease of sheep, and cattle.  Hepatic necrosis is caused by exotoxins of ''C. novyi'' type B in liver damaged by ''Fasciola hepatica''.

It causes dark discoloration of skin due to subcutaneous venous congestion, and causes [[Necrosis - Pathology#Gas Gangrene|gas gangrene]] and [[Muscles Inflammatory - Pathology#Gas gangrene|myositis]].

It causes dark discoloration of skin due to subcutaneous venous congestion, and causes [[Gas Gangrene|gas gangrene]] and myositis.

It may be involved in [[Bacterial skin infections - Pathology#Systemic bacterial infections|cutaneous lesions]] and causes big head in rams - oedema of subcutaneous tissues of the head, neck and cranial thorax. It produces a necrotising lethal alpha toxin.

It may be involved in [[Bacterial skin infections - Pathology#Systemic bacterial infections|cutaneous lesions]] and causes big head in rams - oedema of subcutaneous tissues of the head, neck and cranial thorax. It produces a necrotising lethal alpha toxin.