I leave the A/C on for my furry kids during the summer and heat during the winter, no one seem to be able to cope with either extremes here in my home. I do live near the ocean and some days i need a computer break during the day since i work from home few days , i go for a nice walk and sometimes it is very very hot, i put on the body harness and soak it with cold water, and bring a bottle with us , as long as i keep them soaked they do very well. Yorkies will do better than our shihtsus ... those need to be soaked from head to tail if we go out during a summer day and it is hot ... but we play safe and stay mostly in the shades of the trees...
I also put ICE in their drinking water when they are free in the backyard ...they love it ! and of course some doggi ice-cream is also always welcome by them, but i keep it to a minimum ... i am not very fond of giving them many treats because of their teeth ...
I am sure many more creative suggestions will come your way ... enjoy your summer
I love summer !
XOXO