It's a good question because I just found 3 on my dog in the same spot. That's how I found this question, by doing a little research to figure out if it's normal. One tick was huge, and the other 2 were smaller & right beside the larger one. It made me wonder if it was a mama tick who had two baby ticks with her. My poor dog...he gets monthly meds, but it doesn't always work well on ticks.