agriculturalpests animalhabitats animalmodels animals australia behavior behavioralpsychology bibliography bird classification cognitivepsychology comparative congresses control digestiveorgans digestivesystemdiseases diseases dogfamily dogs dolls earlyreaders elephants endangeredanimals environmentalconservation exoticanimals experimental extinct fiction general hamsters history humorousstories hunting infections juvenileliterature laboratory laboratoryanimals laboratoryinfections laboratorymedicine mammals medicalresearch mice miscellaneous mycoplasmadiseasesinanimals neoplasms neuropsychiatry neuropsychology neuroscience pathology petcare petmice pets poetry protection protectionofplants puppets rabbits rats ratsascarriersofdisease research respiratoryorgans respiratorysystem respiratorytractdiseases respiratorytractinfections rodentdiseases rodentia rodentsaslaboratoryanimals scientificresearch smallgame smallmammals socialaspects socialaspectsofrats socialhistory toxicology toys trapping tumors tumorsinanimals veterinary veterinarygastroenterology veterinaryvirology virusdiseases wf140r434631985 wi100d57211985 wildcanines wildlife zoology