A kangaroo takes a nap in Hangzhou Zoo in Zhejiang Province. /VCG Photo

A seal takes a nap on an abandoned dinghy in Britain. /VCG Photo

A sea otter seen floating down a harbor gets some sleep with a makeshift seaweed blanket it has pulled over itself in California, US. /VCG Photo

Several kangaroos lying on the lawn, enjoying sunbath in Guangzhou, China. /VCG Photo

Two tigers enjoy a nap in the afternoon in Yangzhou city of Jiangsu Province, China. /VCG Photo

A red panda takes a nap in the afternoon in Yangzhou city, Jiangsu Province. /VCG Photo

Dozens of terrapins sit on the back of a sleeping hippo in Kruger National Park, South Africa. /VCG Photo