Talmud (Rodkinson Edition) — Book 3…
“ If a mouse entered a house and another came out of the same house and both had pieces of Chometz in their mouths, shall we presume that it was the same mouse in both cases or not? If it should be said, that it is the same, how is it if the mouse entering was black and the other was white, shall we assume that one took the piece of bread away from the other or that there were two separate pieces of bread? If you will say that one mouse would not take anything away from another, how would it be if a mouse entered with the piece of bread and a cat came out with a piece of bread? ”
