Another 'bad mommy' moment

Today I ran out to Creighton's daycare on my lunch hour and picked him up for a haircut. When the girl got done cutting his hair she informed me that he had a tick in his hair and showed me that indeed he had a big tick stuck in his head. I was embarrassed. How could I have not noticed that? The sad thing is that last night Greg and I sat with the dogs and picked all of the ticks off of them. How did we not even think to check the kids??? Mark another one in the 'bad mommy' column! Oops...