Play it safe when hiking:
Take a buddy.
Hydrate the day before you go.
Bring plenty of water and your phone.
Tell friends and family where you are heading and when you plan on returning.
Remember your pet's safety, too, when hike.
Dogs do not actually sweat.
They exchange heat through panting and to a minor degree, through their feet pads.
They do not tolerate high temperatures as well as humans do.
If it's more hotter than 90 degrees, leave your dog at home.