When you are enjoying the outdoors with your dog, it’s easy to forget that they can be subject to heat stroke.  Make sure they have access to plenty of water and places to rest and cool down.  Some of the signs that your dog needs a cooling break are:

• Excessive panting
• Any whimpering/whining
• Going slower than their normal pace (whether it be hiking, jogging, etc.)
• Laying down more often than usual

You can also try this recipe for homemade pupsicles, from Pupford.com.