Scientists in the Russian Far East have carried out a post-mortem examination of the remains of the only mummified dog ever found in the world. Found sealed inside permafrost during a hunt for traces of woolly mammoths, the perfectly-preserved body is 12,450 years old. The dog, believed to be a three-month-old female, was unearthed in 2011 on the Syallakh River in the Ust-Yana region of Yakutia, also known as the Sakha Republic. Experts spent the past four years analysing the body – which included not just bones but also its heart, lungs and stomach – but only carried out the...