Same here. No way a seat is left up or my german shepard finds it within 5 minutes. The seat and lid are always down unless in use.We keep everything down. Why you ask? Our german shepard sometime heads to the closest available water source. At night that's the good ol water closet in the room of the porcelain throne!
Really want to mess with your brain? Have a Pepsi when the passengers cup has root beer or dr pepper. I have experienced both.Drinking what you thought was OJ and it was a coke instead.
Done that on car trips more than once in the early AM when both are in the cup holder.
Locks your brain up for a second.