Like other dolls in MGA’s Chou Chou baby doll line, Rock-A-Bye Chou Chou has functions not typically found in other baby dolls. This doll’s special emphasis is sleepytime responses. When rocked, she gently closes her eyes. MGA hasn’t left out the opposite end of bedtime, either. When Rock-A-Bye Chou Chou is picked up she awakens. Upon awakening, she may either laugh or cry. Don’t worry if she cries. Gently patting her back will calm her down.. Requires three AA batteries.