Here’s an adult female deer tick that I photographed yesterday on this ruler (inches). They are actually rather large compared to young ticks, or nymphs. I pulled another one off my dog this morning. If you live near or frequent an area or habitat prone to ticks be aware that at this time of year the cool autumn mornings can lead these parasites to find any warm body they can, leaping on to mammals quickly. Thankfully you should be able to spot them if you check carefully.