English: The cattle tick (Boophilus microplus) is a serious external parasite of cattle in Australia. It transmits tick fevers and, if uncontrolled, can cause serious losses to the industry. Cattle ticks can be seen at any time of the year, but they mainly occur from late spring to mid-winter. Ticks are found mostly on the belly, the shoulder, the neck and ear of the cattle. The illustration shows a beast carrying a very heavy burden of cattle tick.