Otters Play Peek-a-Boo

Via Peter G Trimming, who writes:

At the British Wildlife Centre, Newchapel, Surrey, ‘Tamar’ (left) and ‘Emmy’ (right) had been playing in their pool, when they spotted the photographer. They then decided to play a game of peek-a-boo, with their heads bobbing up at various points to the left and right. On this occasion, they both popped up at the same point.