I have camped on Svalbard, where polar bears are a real threat and hence firearms are mandatory outside of town. However, that's only the last resort. More importantly than scaring them away or in the utmost case shooting them, is detecting them in time. We were traveling with sled-dogs, and they make up a very great watch for intruders. They start to bark very loudly if they see something approaching, even in the middle of the night.
Of course, if you are really scared, you should put up a watch, and if your company consists of several persons, that's always the safest thing to do if staying in an unknown area (but also the most uncomfortable). It protects you not only from animals, but also from other dangers, such as a fire, a flooding (when near water) or - beware - a thief. But you said you have a husky dog, so let him do the watching. He'll most likely bark when he scents foxes, and those will be afraid of him, since they're smaller than your dog. So just leash your dog to a pole outside the tent. A husky dog will be fine sleeping outside.
One important thing I forgot: Could there be rabies in the area where you hike? If so, that would be a real danger, both to you and your dog, as infested animals are aggressive. So make sure your dog is vaccinated against it (mandatory in most countries, ASFAIK) and talk to your doctor whether you need one yourself.