37.5 x 51.4 cm. (14.8 x 20.2 in.) Subscribe now to view details for this work, and gain access to over 18 million auction results. Purchase One-Day Pass ...

But a new study published in November found that chinstrap penguins take short naps thousands of times every day. They accumulate their daily sleep requirement of more than 11 hours in short ...

And just as bats imparted upon him the art of instilling fear in his adversaries ... Researchers have unveiled that chinstrap penguins slumber for more than 11 hours per day.