A tick is an arthropod, like a spider. Ticks have 8 legs, are very small, and attach to a person or animal to suck blood. In Pennsylvania, many ticks carry diseases. Ticks can be found anywhere: outdoors in areas with long grasses and weeds, leaf piles, the woods, and even in your own yard. It's important to take preventative measures to avoid tick bites, know what to do if you find a tick on you, and understand the symptoms of tickborne diseases.