They Thought of Me?

My brother shows me a picture just like this on his camera and says my niece thought of me when she saw it. What exactly does that mean??

Actually, I have been finding offensive little piles of "manure" in my fenced backyard recently and I am quite vexed. Some creature has been entering my yard under cover of darkness and defiling the premises! I water the flowers at dusk, the yard is pristine. I go out in the morning and there, in the middle of my grass, sits the offensive ordure. If it's a cat, why is it defying its nature? If it's a dog, how is it getting into my yard? Are the neighborhood pets uniting against me? Perhaps it's the pesky little dog next door who's forever yipping at me when I'm outside. Exulting in his sordid little victory! Curses!