Always keep your dog on a leash. If it's running loose it will harass the local wildlife and possibly kill the wild animals. In many places it's illegal to let your dog run loose for this very reason.but it'd be a nightmare if she decided to run off after a fox or bunny or something.
My dog is the same way. I lace up the boots, put on the adventure hat, or touch the canoe paddles and he goes bonkers.They know ALL the signs of preparing for a hike.