For the dogs who don't stop.
Water, wherever the walk takes the two of you.
Thirst doesn't wait for home. Somewhere past the halfway mark, the pace slows and the panting starts, and what your dog needs is simply a drink - offered calmly, from something clean, held in your own hand. The canteen folds open into a bowl in a single motion, sealed cool until the moment it's wanted, then clips away and comes with you to the next corner. A small thing to carry, for the quiet reassurance of never being caught without it.