One always lies, the other never tells the truth.

One always lies, and the other also always lies.

One knows how you die, and the other knows when.

Wait? Are you the one who always lies? In which case do both always tell the truth? But that would mean you always tell the truth so both must always lie………but that would mean you always tell the tr…. Maybe IM looking at this wrong so you say they both always lie but that would mean you always lie, or dose it? What if you never tell the truth? The opposite of always is never and the opposite of lie is truth is lie so you never tell the truth and you always lie, in order to break the paradox I choose this truth.

And they both claim they did not yet have any treats today.

To a degree. Kitchen to the back left, likely powder bath or storage closet toward the left foreground, dining table directly behind, living room to the right, and just enough walking space between it all.

Yes! This is exactly what i thought of!