We've only had one dog come in with ticks this month. It was TERRIBLE. We found 6 on him, and three of them had already fed, so they were huge, about the size of toonies. We thought we had got them all off and then I took him into the bath and as I was wetting down his face, I found the biggest one under his eye --- HUGE and white and feeding. We pulled it off and it's legs wriggled all over, it was sick! We found a flea on the same dog. Poor guy!