grey wolf- a wolf with a brindled grey coat living in forested northern regions of North America Canis lupus,gray wolf,timber wolf wolf- any of various predatory carnivorous canine mammals of North America and Eurasia that usually hunt in packs ...
the tundra wolf is lighter in color and the desert wolf is grayish-red. The wolf feeds mainly on animals: wild and domesticated ungulates, dogs, hare, and small rodents. Wolves live in pairs during the breeding season and in late autumn and the beginning of winter sometimes form packs of ...
[2] All of them went extinct in the wild — and all of them came back, thanks to reintroduction programs. [3] Conservation scientists use translocation and captive breeding (圈养繁殖) to re-establish animal populations that have died out in the wild — either entirely or in certain areas....
people did not so much domesticate wolves as wolves domesticated people. Wolves may have started living at the edge of human settlements as scavengers, eating scraps of food and waste. Some learned to live with human beings in a mutually helpful way and gradually evolved into dogs. At the ver...
Data from the wild show that as a rule only one female in a pack gives birth. Female suppression is assumed to prevent the other pack members from breeding. Our main interest was to elucidate the proximate behavioural mechanisms by which the socio-sexual relationships are structured in times ...
As humans wandered acrossAsia and Europe, they took their dogs along, using them for additional tasksand further breeding them for selected qualities that would better enable themto perform specific duties. According to Dr. Colin Groves,of the Department of Archaeology and Anthropology at Australian...
根据第二段 “In 1987, there were only 27 California condors left, none of which were in the wild, only in captive breeding programs, It was those breeding programs that contributed to their population rise, enough that by 1991 some of them could be freed into the wild.(1987年,只剩下27...
In Bolivia, the exposure to infectious and parasitic disease agents has been reported for free-ranging maned wolves in the Noel Kempff Mercado National Park (Deem and Emmons, 2005). Maned wolves occur in low densities, their large home ranges are stable, breeding pairs have limited contact and...
Do wolves live in the Appalachian Mountains?Wolves:Wolves are predatory mammals. They are canines, like dogs, foxes and coyotes. In fact, dogs evolved from wolves through a process of selective breeding by humans. Keeping wolves as pets, however, is dangerous....
The maned wolf (Chrysocyon brachyurus) it is the largest canid of South Arnerica. Characteristic of open habitats, the species is threatened with the transformation of the fields in agricultural are as and, today, in spite of the wide di... FHG Rodrigues - 《Biblioteca Digital Da Unicamp》...