We took the small black dog with us on two longer car-journeys recently.
Heading for Guildford [2 1/2 hours drive away] we brought with us her food, and a plastic squash-bottle of water, to give to her at her usual mealtime. Halfway there, we could hear a persistent, light clicking sound from the car-boot. No squeaking, panting, or restless sounds, so we puzzled slightly, unable to identify the noise.
Just before our destination we found a good place to stop and let her air her fur. Opening the boot we found...
That amazingly clever little dog had **unscrewed** the plastic lid on the water container, and taken about a third of it, **without spilling any water**
Heaven knows how she did it, as the lid was on tightly, since you don't want it falling over while driving. and heaven knows how she got the water out of its very narrow neck without spilling it, or knocking the container over...
Presumably the clicking sound was her very gentle twisting open the bottle lid, little by little, as there were tiny dents in it, not large bite-marks.
On the earlier 'longer drive' she had done this same unscrewing - was it a fluke? had the bottle top been loose and 'wobbled' off? but clearly now she has repeated it, this is something she has taught herself, and jolly clever it is too! Her answer to boredom?!
Life is full of surprises!