The answer to 'what is tick' is a tick is a small, parasitic arachnid that feeds on the blood of humans, animals, and birds. Ticks are known to transmit various diseases, including Lyme disease, Rocky Mountain spotted fever, and ehrlichiosis, which can be harmful to both people and pets.
Ticks are typically found in wooded, grassy, or shrubby areas and can attach themselves to the skin of their host. They have a hard, rounded body and eight legs, and they use their sharp mouthparts to latch onto their host and feed on their blood. Ticks can range in size from as small as a poppy seed to as large as a pencil eraser when fully engorged with blood.