In the past 50 years, the wild New Guinea Singing Dogs (Canis hallstromi) have been considered extinct, and their songs will never be heard in history. However, according to the latest DNA evidence, the link between captive New Guinea songdogs and highland wild dogs suggests that there is an ancestral relationship between the two. < p > < p > it is reported that the New Guinea singing dog got its name because of its unique vocal line, high pitch, and long howl, which sounds like human singing. The earliest evidence for the appearance of the New Guinea Singing Dog can be traced back to 3500 years ago. Many archaeologists believe that the brown and short haired singing dog appeared in New Guinea at about the same time, so they speculate that it may have arrived with human beings. < / P > < p > at present, this kind of dog can only be heard in zoos, while the wild population was thought to have been extinct for decades. There are about 200-300 captive New Guinea Singing Dogs around the world, mainly living in zoos and animal shelters. A recent study published in the Journal of the National Academy of Sciences (PNAs) shows that wild dogs living near gold mines in the highlands of New Guinea are actually the same kind of dogs. In 2016, the expedition found 15 wild dogs in the remote highlands of Western New Guinea, and returned here in 2018 to collect blood, hair, feces and saliva samples to confirm whether they were singing dogs, and even measured their weight, age and other physical conditions. < / P > < p > in the published paper, DNA was extracted from the blood of three dogs for research, and then compared with 16 captive New Guinea Singing Dogs, 25 Australian wild dogs (Canis lupus dingo), and more than 1000 dogs from 161 breeds. The team found that the genetic characteristics of highland and New Guinea Singing Dogs are almost the same, and they are also closely related to Australian wild dogs, while the genetic relationship with other East Asian dogs, such as Akita, Chai and songlion, is relatively far away. Elaine Ostrander, a researcher at the U.S. National Institutes of health, said that these highland dogs and captive singing dogs had up to 70% genetic overlap, but still lacked some primitive diversity, which might have been created by humans. The researchers also mentioned that since there are very few singing dogs, they hope to breed real New Guinea “Singing Dogs” through sperm samples, because losing a species is not a good thing. Global Tech