Little Fluffy Ball is the only toy which can make Emma turn to expose her belly. I touch Emma’s back with Little Fluffy Ball, so she could only turn around to catch it. Or I pushed Little Fluffy Ball between her legs, so she could only expose her belly and expel it with back legs. Emma never chased Little Fluffy Ball and only gazed at it. Once the distance was suitable, she caught the Little Fluffy Ball and put it into her mouth to lick and bite it. Little Fluffy Ball was not Emma’s favorite toy, but Emma turned to show her belly every time when it showed up.