{"topic_id":"exotic_pet_profile_gerbil","category":"exotic-pet-profile","context":"---\ntopic_id: exotic_pet_profile_gerbil\ncategory: exotic-pet-profile\ntitle: \"Mongolian gerbil (Meriones unguiculatus) — species profile (taxonomy, geographic range, habitat, physical description, behavior, wild diet, reproduction, lifespan)\"\nlang: en\nsource: \"Animal Diversity Web (animaldiversity.org, University of Michigan) — species account Meriones unguiculatus\"\nsource_file: pdf-raw/exotic-profile-2026/gerbil.txt\ndate_parsed: 2026-07-28\ntokens_estimated: 0\nverified: true\nverification: c1_substring\nsource_document: \"Animal Diversity Web species account (Meriones unguiculatus)\"\ncitation:\n  authority: \"Animal Diversity Web (animaldiversity.org, University of Michigan)\"\n  title: \"Mongolian gerbil (Meriones unguiculatus) — species profile (taxonomy, origin, lifespan, husbandry basics)\"\n  url: \"https://animaldiversity.org/accounts/Meriones_unguiculatus/\"\n  retrieved: \"2026-07-28\"\n  ref: \"ADW species account Meriones unguiculatus\"\n  doc_type: \"expert species account (.edu, compiled from primary literature)\"\n  needs_review: false\nauthority_tier: T3\nauthority_tier_basis: \"T3:expert-db\"\nauthority_tier_date: 2026-08-04\n---\n\n# Mongolian gerbil (Meriones unguiculatus) — species profile (taxonomy, geographic range, habitat, physical description, behavior, wild diet, reproduction, lifespan)\nAuthoritative first-hand species account (Animal Diversity Web, University of Michigan). All bullet facts are verbatim from the cited source and C1-substring verified.\n\n## Geographic Range\n- Mongolian gerbils, or Mongolian jirds, occur naturally in the highlands of Inner Mongolia.\n- They are also found in adjacent parts of southern Siberia and northern China, including Sinkiang and Manchuria provinces.\n- Currently Meriones unguiculatus is a popular housepet and is widely used in research.\n- It can be found worldwide in a variety of locales and environments (Agren et al. 1989).\n\n## Habitat\n- Mongolian gerbils live in the highlands in Inner Mongolia.\n- Climate in these regions is extreme, temperatures can vary from -40 degrees Celsius in the winter to 50 degrees Celsius in the summer.\n- These areas are characterized by low annual precipitation (less than 230 mm a year) and a long winter (October to April).\n- Gerbils, or jirds, live in clay or sandy deserts, grasslands, scrub, arid steppes, and mountain valleys.\n\n## Physical Description\n- Mongolian jird body length averages 120 mm long, tail length may range up to 120 mm.\n- The fur is thin, with grey roots, a yellow shaft, and a black tip.\n- Ventral fur is white and their unfurred claws reveal their pink/white skin.\n- Males are slightly larger than females, with males averaging 60 grams and females averaging 50-55 grams (van Veen 1999).\n\n## Behavior\n- Mongolian gerbils have some interesting behaviors.\n- Each family group of gerbils seems to be led by an alpha male that is larger than the rest.\n- Family and territory size (anywhere from 325 to 1550 square meters) seems to be dependent on alpha male size.\n- There are 2-3 times more females than males in any family but family size rarely exceeds 20 animals.\n- Gerbils spend much of their time foraging.\n\n## Food Habits (Wild Diet)\n- Mongolian gerbils feed mainly on mugwort ( Artemisia sieversiana and A.\n- Saltwort ( Salsola collina ), bristle grass ( Setaria viridis ), and lyme grass ( Leymus chinensis ) are also eaten.\n- Gerbils conserve both water and fat extremely well.\n- They conserve water by producing a highly concentrated urine and dry feces.\n- Captive mongolian gerbils eat a wide variety of foods, including grains, grasses, and some fruits and vegetables.\n\n## Reproduction\n- Wild mongolian gerbils breed between February and October, producing up to three litters.\n- The estrus cycle lasts 4-6 days and a post-partum estrus can occur.\n- Gestation lasts between 19 and 30 days.\n- Litter size varies between 1 and 12, but averages 4 to 7.\n\n## Conservation Status\n- Mongolian gerbil populations are stable.\n- Their adaptations to their harsh natural enviroments makes them suited for living in many parts of the world.\n- Additional Links Encyclopedia of Life Contributors Jack Chen (author), University of California, Irvine, Rudi Berkelhamer (editor), University of California, Irvine.\n## Lifespan\n- Average lifespan Status: captivity 2.0 years\n","sources":["exotic-pet-profile — Mongolian gerbil (Meriones unguiculatus) — species profile (taxonomy, origin, lifespan, husbandry basics) (retrieved 2026-07-28)"],"source":{"authority":"exotic-pet-profile","title":"Mongolian gerbil (Meriones unguiculatus) — species profile (taxonomy, origin, lifespan, husbandry basics)","url":"https://animaldiversity.org/accounts/Meriones_unguiculatus/","retrieved":"2026-07-28","ref":"","doc_type":"official PDF","source_document":"Animal Diversity Web species account (Meriones unguiculatus)","verification_file":"pdf-raw/exotic-profile-2026/gerbil.txt"},"source_document":"Animal Diversity Web species account (Meriones unguiculatus)","source_file":"pdf-raw/exotic-profile-2026/gerbil.txt","trust":{"authority_tier":"T3","fidelity":"verbatim","license":null,"display_grade":"B"},"tokens_estimated":807,"generated_at":null,"tip":"Use /api/v1/topics to discover more topics. /api/v1/nutrient for precise single-point queries. /api/v1/cross_compare for 2-3 standard comparisons."}