What makes a tick a parasite?

Ticks are considered parasites because they feed on the blood of their hosts, which can include mammals, birds, reptiles, and amphibians. This feeding behavior not only provides them with essential nutrients for growth and reproduction but can also harm the host by causing blood loss, skin irritation, and potentially transmitting diseases. Their dependence on a host for sustenance and the negative impact they can have on their hosts are key characteristics that define them as parasites.