I must have been born in a different world (tin cup on a nail over the watering trough) as I never buy this stuff but my wife bought the same little bottle/trough for Sissy the Grey. Has a snap shackle and I got used to hanging it on the steel grid which creates the "separate compartment" in the 4runner so it's always there and now I like it better than a plastic jug or bike cage bottle (for the dog, not me). Wife also has the wonderful chambered bowl which won't spill even upside down which she keeps on the deck in her car. I fear we WILL die with all the dog toys!
jack