Page 70 - The Veterinary Care of the Horse

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Figure 2.20 Skin irritation casued by pinworm

A sticky film of dried yellow, cream or greenish fluid can often be seen around the

horse’s anus and on the vulva of mares. Live worms may protrude intermittently from the
anus. Females often die after laying their eggs and may be seen in a more or less decomposed