Barber’s pole worm (Haemonchus contortus) is a blood-sucking roundworm of sheep and goats, with minor crossover into cattle. Clinical signs of Haemonchosis include anaemia due to blood loss with associated lethargy. Affected individuals may flop down when mustered briskly and have extremely pale inner eyelids and gums. All condition types can be affected including big fat ewes. In more chronic cases you may see 'bottle-jaw' due to loss of blood protein.