It might be tempting to pour water on your dog's back to help cool them off quickly. THIS IS DANGEROUS. Don't do it!
Instead, you'll want to cool your dog (or horse) off by cooling their feet. Offer water that's not icy cold. Offer shade, or go indoors to air-conditioning.
If you're not sure if the pavement is too hot for them, touch it with your hand and leave it there for a minute. If it's too hot for you, it's definitely too hot for them.
NEVER leave your animal in a car unattended. Cars heat
up quickly, even with the windows cracked. Brain damage, heat stroke, or death can occur in as little as 15 minutes.