Day 79 in the life of the polar bear cubs: Ear nibbling
Mother bear Giovanna patiently withstands the nibble attacks of her eleven-week-old daughter, and remains as cool as ever, despite the oral play - a real earful! Meanwhile the polar bear boy snuggles up in his mum's elbow.
http://www.youtube.com/watch?v=GhorR95VJTI#ws