The wolf (Latin name: Canis lupus Linnaeus) is protected by a "three haves" protected animal. There are 46 subspecies, medium-sized, well-proportioned, slender limbs, and toe-like, which is conducive to running fast. The head and palate are pointed, the face is long, the nose is prominent, the ears are pointed and upright, the sense of smell is sensitive, and the hearing is developed. Canine teeth and split teeth are well developed; the upper molars have obvious tips, the medial side of the lower molars have a small tip and heel tip; the diameter of the molar crown is greater than the height of the lateral incisors; the tooth type is. The hair is thick and long. The forefoots are 4 to 5 toes, and the hind feet are generally 4 toes; the claws are thick and blunt, and cannot be or slightly retractable. The tail is hairy and more developed. Good at running fast and long distances, living in groups, often chasing and hunting. Feeds on herbivores and rodents. Its natural habitats are forests , deserts , mountains , boreal grasslands , coniferous forests , and grasslands. It is found all over the world except Antarctica and most of the islands. Similar in appearance to dogs and jackals, the foot is long and thin, the eyes are oblique, the upper jawbone is pointed, the mouth is wide and curved, the ears are erect, the chest is slightly narrow, and the tail is straight and droopy between the two hind legs. The coat color varies with the origin of origin, with a brownish yellow or grayish yellow, slightly mixed with black, and the lower part is white.
Activities in the provinces of North China, Central China and South China are only in mountainous environments and are not suitable for narrow environments developed by humans. The distribution of wolves in Heilongjiang, Jilin, Liaoning and other provinces is also limited to mountainous areas. Wolves are the most widespread of carnivores, and even among all mammals, their range is only smaller than that of humans and a few other rodents. They are found in parts of the Northern Hemisphere, including grasslands, tundra, coniferous and deciduous forests, swamps and deserts. But behind this, the gray wolves face the reality that in most regions, they have less than 10,000 in the world.
Wolves are no longer seen in the United States except for most of the northern states (wolf packs are being reintroduced in many parts of the United States due to ecologists' research showing that wolves are irreplaceable in ecosystems), and wild wolves in Mexico have become extinct in 1960, as are most of Asia. Europe is at its worst, with the exception of Spain, Italy, Poland, Greece and Turkey, where there are also small numbers of wolves, and almost all other areas are extinct.
Cause of death
Most of the deaths of adult wolves are due to hunting and poaching, disease and trauma. Although adult wolves are occasionally killed by competitors or prey, their most dangerous non-human enemy is the wolf itself.
Studies of wolf mortality have shown that 14%-65% of wolf deaths are due to attacks by other wolves.
In addition, wolves are infected by domestic dogs, such as rabies, parvovirus and canine distemper, which is also a major cause.
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