I do something like this in the barn for my livestock dogs (Pyrenees) - I don’t use ice, but just a bucket of water and the evaporation helps keep them cool. One of my pyrs lays in front of that thing all day!
Awww....our cow property neighbor has pyrs....we see them on the game cams, every once in a while. They look like they would LOVE an a/c, in the summer!