From Cow

Lice are common skin parasites of cattle.

These parasites are wingless, flattened insects barely visible to the naked eye. The claws of the legs are adapted for clinging to and moving among hairs or feathers. They live within the microenvironment of the cattle coat and transmitted by close contact. In temperate regions, lice are most abundant during the colder months and often are difficult to find in the summer.

Lice are largely host-specific, living on one species or several closely related species.

Species which are pathogenic to cattle include: