"Yeah this can get tricky. I swear, my dachshund can perfectly detect my excitement..."
My Aussie recognizes what shoes I'm putting on which is enough to get him excited and the sight of a backpack or trekking pole puts him into high gear. The appearance of his backpack launches him into crying and running sound the house. We've found it helps to take him for a short walk before putting him in the car, so he lays down and sleeps rather than crying loudly in my ear. Needless to say, he LOVES to go hiking.