All animals and fowl impounded under the provisions of this chapter, if unclaimed, shall be retained in the animal shelter for a minimum period of five days. If at the expiration of five days from date of notice to owner or the date of posting of notice or mailing of notice, the animal or fowl has not been reclaimed, it may be destroyed; or, except in the case of vicious animals or fowl, it may be released to any person, upon such person obtaining a license as provided in this chapter and paying a $10.00 new owner’s fee.