I agree with Pascale’s assessment. Also, it’s likely your dog likes being surrounded by the scent of your clothing, shoes, etc. Many years ago, my husband and I owned a lab retriever. She used to gather clothes, shoes, anything she could find with our scent. Somehow, that seemed to comfort her, until we one or both of us came home. We thought of it as her way of telling us how much she loves being with us. Hope this helps 🙂