Under human domestication, people are more like the head wolf of the pack in the eyes of dogs, and when people are alive, they are absolutely loyal. However, when the "head wolf" dies, this obedience disappears, so there is no difference between the human corpse and the meat of animals in nature in front of the dogs

In the world of insects, a variety of successful strategies have been developed to avoid dying from the cold

In addition to being the most extensive river in the world, the Amazon is also the largest river in the world in terms of river volume