LibGuides: Gray Wolf (Canis lupus) Fact Sheet: Summary (original) (raw)
Gray Wolf (Canis lupus)
Image credit: © San Diego Zoo Wildlife Alliance. All rights reserved.
| Taxonomy | Physical Characteristics |
|---|---|
| Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Carnivora Family: Canidae Genus: Canis Species: Canis lupus (Linnaeus, 1758) - gray wolf Subspecies: C. l. arabs (Arabian peninsula) Subspecies: C. l. arctos (Arctic wolf, North America) Subspecies: C. l. baileyi (Mexican wolf, North America) Subspecies: C. l. chanco (Himalayan range) Subspecies: C. l. italicus (Italy, France, Switzerland) Subspecies: C. l. lycaon (Eastern wolf, North America) Subspecies: C. l. nubilus (Plains wolf, North America) Subspecies: C. l. occidentalis (Northwestern wolf or Northern Timber wolf, North America) Subspecies: C. l. pallipes (most of Asian range: Israel to China) Subspecies: C. l. signatus (Iberia) | Body Weight: Male: c. 41 kg (90 lb) Female: c. 31 kg (68 lb) Highly variable: adult weight 13-78 kg; larger subspecies inhabit northern tundra; smallest subspecies found in Israel Body Length: 100-160 cm (3-5.2 ft) Tail Length: 35-56 cm (1.1-1.8 ft) Pelage: Hair color variable even within populations; litter mates often express great variety. White, cream-colored, buff, tawny, reddish, gray, black, and mottled combinations thereof. All black wolves possible due to early hybridization with domestic dogs. Graying with age. |
| Distribution & Status | Behavior & Ecology |
| Range: Widest geographic range of all land mammals. Circumpolar distribution; extant in nearly 70 countries, 2 subspecies extinct from Japan. Habitat: Generalists, found living in forest, prairie, tundra, desert, and swamp; even living near or with- in large cities. Adapted to live across an extreme range of temperatures, -56 to +50oC (-70 to 120oF) IUCN Status: Least Concern (at species-level); broadly distributed, though eliminated from many former ranges. 2 subspecies (Himalayan, Indian) assessed as Vulnerable. CITES Appendix: Appendix II, except for populations from Bhutan, India, Nepal, and Pakistan where listed on Appendix I. Population in Wild: World population estimate of approximately 200,000-250,000 individuals; unknown numbers in some countries. Most live in the northern regions of Canada and Russia. | Locomotion: Walk, trot or run on toes. Endure long distance travel, over 72 km/day (43 mi/day). Capable of reaching speeds of 56-64 km/hr (35-40 mi/hr). Strong swimmers. Activity Cycle: Active day and night; remain with young pups during daylight hours. Travel alone late spring to summer; pack members form nomadic hunting groups late summer to early spring. Hunt within a cooperatively defended territory. Social Groups: Extremely social, forming packs represented by a breeding pair and their offspring. Breeding pair dominates most social interactions and leads pack activities. All pack members participate in territorial defense and help care for young pups. Diet: Carnivores, feeding mainly on large mammals such as deer, moose, caribou, and reindeer. Diet often supplemented with smaller mammals, fruits, and scavenged food. Predators: Humans and other wolves. |
| Reproduction & Development | Species Highlights |
| Sexual Maturity: Males and females capable of reproduction as early as 10-22 months; social interactions delay many from reproducing until 5-6 yrs. Regularly reproducing until age 9. Gestation: 60-65 days. Litter Size: Range 5-7, typically. Birth weight: 300-500 g (11-18 oz), in managed care. Age at Weaning: c. 5-9 weeks. Typical Life Expectancy: Managed care: for Canis lupus baileyi, median life expectancy of about 11 years | Feature Facts Highly adaptable carnivores Widely distributed across the northern hemisphere Live in forests, prairies, deserts, swamps, and tundra Extremely social animals, they live in family packs whose members cooperatively raise pups, defend territory, and hunt for food Broadly variable in size and body color Largest individuals, tundra inhabitants, may reach 172 lb; small, residents of Israeli deserts may weigh only 29 lb, little more than a coyote |
About This Fact Sheet
© 2014-2019 San Diego Zoo Wildlife Alliance. Updated October 2014. IUCN assessment updated Mar 2019. Taxonomy and population estimates updated Apr 2019.
How to cite: Gray Wolf (Canis lupus) Fact Sheet. c2014-2019. San Diego (CA): San Diego Zoo Wildlife Alliance; [accessed YYYY Mmm dd]. http://ielc.libguides.com/sdzg/factsheets/ graywolf.
(note: replace YYYY Mmm dd with date accessed, e.g., 2014 Sep 15)
Disclaimer: Although San Diego Zoo Wildlife Alliance makes every attempt to provide accurate information, some of the facts provided may become outdated or replaced by new research findings. Questions and comments may be addressed to library@sdzwa.org.
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