Random Odd Thought

Why do all 3 of my book-length projects have a reference to a humanoid character eating mice?

From "Between Worlds" (Double Dragon):“Who ordered the mice?” sang out Juliar from the hallway.

From "The Measure of a Man" (Working title, not sold yet):"Did you want this?" he whispered. "I'm sorry, but you eat mice and I don't. Not yet, anyway."

From "The Demonspawn Chronicles" (still in progress): "My enemy knows I can’t eat this.” He held up a chunk of dry bread, wrinkling his nose in disgust. “But little warm-bloods do, and I can eat them!”
“Mice?” said Julia, and Malak nodded.

I have a weird brain...