Can canines cross successfully between foxes and dogs?

In some secret stories of wild history, there are stories of foxes and dogs crossing to give birth to strange species. So can the two really be crossed successfully? According to the relevant animal genetic data, both dogs and foxes belong to the canine family and can also give birth in theory, but the offspring can no longer have children, and the genetic pairing will be out of order, unable to form normal sperm and eggs. In addition, because foxes and dogs are not the same creature, there is reproductive isolation, which shows that there are no successful cases in life.

Fox

Attachment: the canine family belongs to vertebrates, mammals and carnivores, all of which are terrestrial, and only a few species occasionally climb trees. There are 34 species of canines in the world, which are divided into 12 genera. Canines include dogs, wolves, jackals, foxes and so on. Canine is one of the most successful carnivorous mammals on earth. The canine family includes about 37 species of living wolves, wolves, foxes and other wild animals and domestic dogs. They are all carnivores, and their bodies have evolved into a form that is particularly suitable for hunting life.

There are many different opinions on the genetic relationship among canine members and the division of subfamilies, and these opinions are even very different. In terms of body size and habits, canines can be divided into dogs that are larger and have strong carnivorous habits, which can prey on larger prey, and foxes that are smaller, have slightly miscellaneous feeding habits, and mainly prey on small animals.

Most species are active day and night, a few species are dusk, only raccoon dogs have hibernating habits. Carnivorous and occasionally plant-based foods. The fecundity is strong, most of them are 1 child a year, and each fetus gives birth to 2-13 litters. Most species of fur are precious, some species feed on rats and play an important role in ecological balance, while others damage livestock and poultry and cause serious losses to animal husbandry. Wolves and foxes are carriers of many kinds of pathogens and do some harm to human beings.

Dog

The wolves in the canine family are not only large, but also have the habit of catching prey in groups, so they can catch prey much larger than themselves, making them one of the most powerful predators in the north. Other members of the same genus as wolves are the coyotes and red wolves of North America and several species of jackals (jackals) of Africa and southern and southeastern Asia, which are smaller and less fierce than wolves. Domestic dogs also belong to the same genus as wolves and are the offspring of wolves, and there is no obvious reproductive isolation between them. In addition to wolves, the other two collective hunters are African hounds (African wild dogs) and Asian jackals (jackals and Asian wild dogs). Although they are smaller than wolves, they may be even more ferocious. African hounds may be the only purely carnivorous members of the canine family. The habits of small canines similar to foxes are more diverse. Typical foxes, such as red foxes widely distributed in Eurasia and North America, mainly feed on small vertebrates, as well as invertebrates, berries, bird eggs and so on. The big-eared foxes in Africa are basically limited to insects, mainly termites. The big-eared fox is estranged from other members of the canine family. The only strong tree-climbing member of the canine family is the gray fox of North America, which often climbs trees. East Asian raccoon dogs also occasionally climb low trees, which can be found in most parts of China. They are between foxes and raccoons, have a mixed diet, and are one of the members of the canine family that eat the most plant food.