Why are different breeds of dogs all considered the same species?Nikhil Swaminathan
This study reveals, for the first time, an interspecific synchronization in long-term stress levels. Previously, acute stress, has been shown to be highly contagious both among humans and between individuals of other species. Here, long-term stress synchronization in dogs and their owners was inve...
根据第一段Dogs are likely to have complex (复杂的) feelings such as jealousy (嫉妒) and pride,according to a new scientific research.(一项新的科学研究表明,狗可能会有复杂的情感,比如嫉妒和骄傲。)可知,文章主要介绍了一项新的科学研究结果,研究表明狗可能会有复杂的情感,比如嫉妒和骄傲。由此推知,这...
E.由狼进化而来的狗Humans are not the only ones who underwent self-domestication. So did our close relatives, the bonobos(倭黑猩猩), and the species we call our best friend. A tiny proportion of the genome differentiates dogs from wolves, and yet millions of dogs are comfortably curled up ...
However, the origin of dog domestication is still under debate because the temporal origin of dog domestication, thus when the dog began to associate with humans, cannot be equated with the genetic split time between populations of wolves and dogs. Divergence between the Eurasian gray wolf and ...
Dogs and other hairy mammals shake at just the right frequencies to get rid of water most quickly from their bodies-and directly on to any unlucky humans nearby.Mice do it.So do tigers and pandas.These animals really know how to shake.Frequency is the number of cycles-movements back and ...
Equally low thresholds have been found in other species, including monkeys, cats and seals. Given the lack of data from the domestic dog, we tested 5 adult dogs on a conditioned discrimination task with random dot displays. In addition, five adult humans were tested in the same condition for...
Many people say dolphins (海豚) are intelligent (聪明的). They seem to be able to think, understand, and learn things quickly. But are they as smart as humans, or are they more like cats and dogs? Dolphins use their brains (大脑) quite differently from the way humans do.But scientists...
Human brains work in the same way.Andies said it gave us a new understanding of language. That is to say, not only humans understand the meaning in words, but also other species do.(B)1. For the study, researchers did all of the following EXCEPT that ___. A. they made dogs sit ...
Dogs also may become "sporadically infected" through exposure to wildlife or livestock. "Dogs have their own Brucella species, B. canis, which causes reproductive failure, and rarely causes disease in humans," the report says. "However, disease burden data for B. canis in th...