{"success":true,"data":{"breed":{"id":130020,"breedId":"small_mammal_fancy_rat","slug":"fancy-rat-2","species":"Small Mammal","primaryNameEn":"Fancy Rat","primaryNameZh":"","originCountry":"Worldwide (domesticated)","sizeCategory":"Small","originalPurpose":"Laboratory/Companion","scientificName":"Rattus norvegicus domestica","category":"Rodent","husbandryDifficulty":"Beginner","socialNeeds":"Very High","createdAt":"2026-06-28T12:17:33.000Z","updatedAt":"2026-07-01T07:01:23.000Z"},"vitals":{"id":180021,"breedId":"small_mammal_fancy_rat","weightMinKg":0.25,"weightMaxKg":0.5,"heightMinCm":null,"heightMaxCm":null,"lifespanMinYears":2,"lifespanMaxYears":3,"puppyEndAgeMonths":3,"seniorAgeThreshold":2},"care":{"id":150021,"breedId":"small_mammal_fancy_rat","exerciseNeeds":"High - intelligent and active; need daily out-of-cage time and mental stimulation","groomingFrequency":"Minimal - self-grooming; elderly/ill rats may need help","annualExamFocus":"Respiratory (mycoplasma endemic), tumor screening, dental, weight","routineCareNotes":"Daily interaction and free-roam; cage cleaning 2x weekly; respiratory monitoring; group housing"},"predispositions":[{"id":180109,"breedId":"small_mammal_fancy_rat","conditionName":"Mycoplasma pulmonis (Chronic Respiratory Disease)","onsetAgeStage":"adult","prevalenceRisk":"very high","isHereditary":0,"screeningRecommended":0,"notes":null,"conditionSlug":null},{"id":180110,"breedId":"small_mammal_fancy_rat","conditionName":"Mammary Tumors","onsetAgeStage":"senior","prevalenceRisk":"very high","isHereditary":1,"screeningRecommended":0,"notes":null,"conditionSlug":null},{"id":180111,"breedId":"small_mammal_fancy_rat","conditionName":"Pituitary Tumors","onsetAgeStage":"senior","prevalenceRisk":"high","isHereditary":1,"screeningRecommended":0,"notes":null,"conditionSlug":null},{"id":180112,"breedId":"small_mammal_fancy_rat","conditionName":"Bumblefoot","onsetAgeStage":"adult","prevalenceRisk":"medium","isHereditary":0,"screeningRecommended":0,"notes":null,"conditionSlug":null},{"id":180113,"breedId":"small_mammal_fancy_rat","conditionName":"Kidney Disease","onsetAgeStage":"senior","prevalenceRisk":"medium","isHereditary":1,"screeningRecommended":0,"notes":null,"conditionSlug":null},{"id":180114,"breedId":"small_mammal_fancy_rat","conditionName":"Stroke","onsetAgeStage":"senior","prevalenceRisk":"medium","isHereditary":0,"screeningRecommended":0,"notes":null,"conditionSlug":null}],"development":{"id":120021,"breedId":"small_mammal_fancy_rat","neonatalWeightMinG":5,"neonatalWeightMaxG":7,"growthRateNotes":"Eyes open 14-17 days; weaning 4-5 weeks; sexually mature 5-6 weeks; full size by 6 months","coreVaccineSchedule":"No standard vaccines; mycoplasma is endemic"},"obesity":{"id":120021,"breedId":"small_mammal_fancy_rat","obesityRiskLevel":"Medium","idealBcs":3,"bcsVisualCues":"Should have visible waist; pear shape in males normal but not excessive","dailyActivityTarget":45,"caloricFormulaParams":"Lab block as staple; fresh vegetables; limited high-fat treats; protein for growing/elderly"},"breeding":{"id":180021,"breedId":"small_mammal_fancy_rat","avgLitterSizeMin":6,"avgLitterSizeMax":14,"dystociaRisk":"Low","chicRequiredTests":"N/A","recommendedDnaTests":"Tumor line screening (limited)"},"husbandry":{"id":120021,"breedId":"small_mammal_fancy_rat","temperatureGradient":"18-24°C (65-75°F)","humidityRange":"40-60%; avoid ammonia buildup","uvbRequirement":"Not required; crepuscular","dietType":"Quality lab block as staple; daily fresh vegetables; occasional protein (egg, chicken); limited seeds/nuts","commonHealthIssues":"Chronic respiratory disease, mammary/pituitary tumors, bumblefoot, kidney disease, stroke"},"ethogram":{"id":180021,"breedId":"small_mammal_fancy_rat","locomotionBehaviors":"Climbing, running, jumping, bruxing while exploring (contentment)","socialBehaviors":"Obligate social - MUST be kept in same-sex groups (min 2); mutual grooming; play wrestling; sleeping piles","comfortBehaviors":"Bruxing (teeth grinding = contentment), boggling (eyes vibrate), pancaking, mutual grooming","stressDisplacementBehaviors":"Porphyrin staining (red tears), excessive grooming, aggression, reduced activity","breedSpecificBehaviors":"Most intelligent small pet; highly social; trainable; short-lived; prone to respiratory disease and tumors"},"vocalization":{"id":150020,"breedId":"small_mammal_fancy_rat","vocalizationTypes":"Bruxing, chattering, squeaking, ultrasonic 50kHz laughter, hissing","frequencyHzRange":"1,000-80,000 Hz","vocalizationTendency":"Medium","primaryCommunicationModality":"Body language primary; ultrasonic vocalizations for social; scent marking; audible sounds for emphasis","tailSignalRepertoire":"Tail for balance/thermoregulation; lashing = agitation; relaxed = calm"},"behavior":{"id":60020,"breedId":"small_mammal_fancy_rat","topBehaviorProblems":"Hormonal aggression (intact males), barbering, respiratory-related behavior changes","medicalEtiologyRisks":"Respiratory disease causing lethargy; pituitary tumors causing coordination loss; mammary tumors","fearAnxietyEtiologyRisks":"Freezing, fleeing, rare biting; porphyrin stress response","frustrationEtiologyRisks":"Cage bar chewing if understimulated; aggression if overcrowded","learnedBehaviorRisks":"Highly trainable; responds to name; complex problem-solving; empathy toward distressed cage mates","cognitiveDysfunctionBehaviors":"Pituitary tumors cause neurological decline; stroke causes sudden changes; rapid aging"},"emotional":{"id":150020,"breedId":"small_mammal_fancy_rat","anxietyProneness":"Low","topAnxietyTriggers":"Isolation, loss of cage mate, new environment, predator scents","separationAnxietyRisk":"Very High","recommendedCalmingInterventions":"Companion rats (mandatory), consistent handling, familiar bedding/scents, quiet environment","environmentalEnrichmentNeeds":"Puzzle toys, training sessions, climbing structures, foraging, hammocks, free-roam exploration","stressBiomarkerBaseline":"Porphyrin staining, barbering cage mates, reduced play, weight loss, increased respiratory symptoms","cognitiveDysfunctionRisk":"High","cognitiveDysfunctionOnsetYears":2,"sociabilityScore":10},"aiDecoding":{"id":180020,"breedId":"small_mammal_fancy_rat","aiTrainableSignals":"Bruxing/boggling (contentment), ear position, piloerection (fear/cold), porphyrin presence","contextDependentVocalizations":"Bruxing can indicate contentment OR stress processing - body relaxation differentiates","interspeciesCommunicationNotes":"Exceptional human bonding; recognizes individuals; seeks interaction; demonstrates empathy; most interactive small pet"}},"attribution":{"source":"allpets.ai","citation_text":"According to allpets.ai data","license":"CC BY-NC-SA 4.0","website":"https://allpets.ai","version":"2.5"},"timestamp":"2026-07-10T01:22:38.341Z"}