Just purchase a bag of frozen mixed vegetable? and what do you consider a heat wave?
I didnt want to post, because I will get scorned for this but...
While some chicken keepers swear by yogurt as a probiotic (and I get it—no science lecture here), it’s really not ideal for poultry. It often causes runny droppings, which is the last thing we want when keeping birds hydrated in heat. Around 90% of chickens are lactose intolerant and lack the enzymes needed to break down dairy—yes, there are always exceptions, but I’m speaking from basic anatomy, not the rare outliers. Plus, the probiotics in yogurt are designed for mammalian guts and aren’t particularly helpful—or even functional—in a chicken’s unique digestive system.
When people add toppings like bacon (which is extremely high in sodium- or 'bacon flavoring'), it becomes even more inappropriate.
I wouldn't feed that to my dog. As I said, if you want to make sure they are cool, grab a fan, wet the ground, give them a bag of frozen veggies/fruit and let them be hogs in heaven.