If you’ve ever hosted a mouse as a houseguest, you know they can be incredibly clever at finding your food. For example ...“Mus musculus domesticus.”It began raiding human pantries around 12,000 years ago. “Mus musculus musculus.”Our relationship with them began some 8,000 years ago. “And Mus musculus castaneus.”It’s a relative newcomer who began cohabitating only 3,000 to 5,000 years ago. And they found that the longer a mouse variety had lived with humans, the more likely it was to solve these food puzzles.