{"topic_id":"exotic_tox_rat_mouse_tail","category":"exotic-pet-toxicology","context":"---\ntopic_id: exotic_tox_rat_mouse_tail\ncategory: exotic-pet-toxicology\ntitle: \"Low-humidity tail annular constriction / tail-loss hazard in young rats\"\nlang: en\nsource: \"The Merck Veterinary Manual — rat-mouse (exotic and laboratory animals)\"\nsource_file: pdf-raw/exotic-toxicology/rat-mouse.txt\ndate_parsed: 2026-07-29\ntokens_estimated: 0\nverified: true\nverification: c1_substring\nsource_document: \"The Merck Veterinary Manual\"\ncitation:\n  authority: \"The Merck Veterinary Manual\"\n  title: \"Low-humidity tail annular constriction / tail-loss hazard in young rats\"\n  url: \"https://www.merckvetmanual.com/exotic-and-laboratory-animals/rodents/mice-and-rats-as-pets\"\n  retrieved: \"2026-07-29\"\n  ref: \"MerckVetManual-rat-mouse\"\n  doc_type: \"peer-reviewed veterinary reference (Merck & Co.)\"\n  needs_review: false\n---\n\n# Low-humidity tail annular constriction / tail-loss hazard in young rats\nVerbatim first-hand facts from The Merck Veterinary Manual (rat-mouse). All bullets are exact substrings of the cited source file and C1-substring verified. Focus: toxicosis and environmental hazards of the pet species.\n## Toxicology facts\n- This adult rat lost a portion of its tail as a young animal. Raising young rats under conditions of low humidity can cause annular constrictions that can result in loss of the distal tail.\n","sources":["exotic-pet-toxicology — Low-humidity tail annular constriction / tail-loss hazard in young rats (retrieved 2026-07-29)"],"source":{"authority":"exotic-pet-toxicology","title":"Low-humidity tail annular constriction / tail-loss hazard in young rats","url":"https://www.merckvetmanual.com/exotic-and-laboratory-animals/rodents/mice-and-rats-as-pets","retrieved":"2026-07-29","ref":"","doc_type":"official PDF","source_document":"The Merck Veterinary Manual","verification_file":"pdf-raw/exotic-toxicology/rat-mouse.txt"},"source_document":"The Merck Veterinary Manual","source_file":"pdf-raw/exotic-toxicology/rat-mouse.txt","tokens_estimated":204,"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."}