Lice are small, wingless insects that feed on the blood and skin of goats. They are specific to species and do not transmit diseases to humans or other animals. There are two main types of lice that affect goats biting lice (Bovicola spp.) and sucking lice (Linognathus spp.). Biting lice feed on dead skin and debris, while sucking lice attach to the animal and feed on its blood.