*** Commonly seen following a septicaemic condition when an embolus blocks the blood supply.
*** Commonly seen following a septicaemic condition when an embolus blocks the blood supply.
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**** When seen in calves, the possibility of [[Intestines Fibrinous/Haemorrhagic Enteritis - Pathology#Salmonellosis|salmonellosis]] must be kept in mind.
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**** When seen in calves, the possibility of [[Salmonellosis|salmonellosis]] must be kept in mind.
*** Other causes are frostbite and [[Skin Environmental - Pathology#Ergot poisoning|ergot poisoning]].
*** Other causes are frostbite and [[Skin Environmental - Pathology#Ergot poisoning|ergot poisoning]].