These are the adorable small clawed otters from the Birmingham Wildlife Park in England. When it's food time, they try to pass the time by playing with stones. Watch what happens when a keeper walks past with some food. The reaction is just priceless, jumping up and down the glass in anticipation!

Otters are often observed playing and juggling with stones and pebbles, both in the wild and in ZOOs. There are several videos of their unique juggling technique that you can watch online. These adorable expert swimmers have been seen juggling one, two, even three rocks at the same time!

Yet the question as to why they do it, its purpose and gain from it remains unanswered. A theory goes around that it has something to do with their eating behavior, since otters can also often be seen using rocks to smash shells so that they reveal the delicious meat inside. There also have been instances of otters defending their ‘tools’ from other otters.

Asian small-clawed otters are the smallest extant otter species. They range in coastal regions from southern India to Southeast Asia including the islands of Sumatra, Java, Borneo and Palawan.

Birmingham Wildlife Conservation Park is home to a unique collection of animals from across the world, including Red Pandas, lemurs, reptiles, meerkats, otters, birds, wallabies and a large collection of monkeys.