人民网8月20日讯 据英国《每日邮报》，研究者通过研究生活在4000万年前的狗化石发现，狗的进化与气候变化有直接联系。 研究发现，4千万年前生活在北美洲的的狗与猫的生活习性相似，是伏击捕食者。但是几百万年后，曾经被茂密的森林覆盖着的大陆逐渐变成草原，气候也越来越冷，越来越干燥。狗的体...
people's network news on August 20, according to the British "Daily Mail", researchers through the study of life in 40 million years ago the dog fossils found that dog evolution and climate change have direct contact. The study found that 40000000 years ago in North America, dogs and cats living habits similar, is an ambush predator. But millions of years later, once the land has been covered by dense forests, the continent has gradually become grassland. The climate is getting colder and colder. The body of a dog...
