Features one of twelve authentic dog barks at the top of each hour Light sensor deactivates sounds when room is dark 12 of the most popular dog breed images on the dial- including: Labrador Retriever, Yorkshire Terrier, German Shepherd, Golden Retriever, Beagle, Boxer, Dachsund, Bulldog, Poodle, Shih Tzu, Miniature Schnauzer, and Cavalier King Charles Spaniel Adorable Barking Dog Clock will add whimsy and happiness to any room Uses 3 AA batteries (not included)