Shaving the belly for a spay is not an issue. The issue with shaving comes when someone completely shaves a husky. Different parts of the body grow different types of hair and in different densities. A complete shave to the skin on the whole body can cause ingrown hairs that will be problematic. That aside, shaving a husky completely, doesn't have to go all the way to the skin, can make it difficult for huskies to regulate their body temperature. Their fur serves to both protect them from cold as much as from heat and they can potentially die of heat stroke if shaved in summer.