Breed: Unknown-Chihuahua Mix Gender: female Nickname: Shelby Age: 48 Years 7 Months Posted Breed: Shetland Sheepdog Sheltie / Chihuahua / Mixed (short coat). This little girl is a laugh a minute dog. She smiles when she is happy. She weighs about 7 pounds. She is spayed, up to date om her shots and fully vetted.