Made available in DSpace on 2016-04-28T20:18:32Z (GMT). No. of bitstreams: 1 2008 - Pablo Maghelly Correa.pdf: 2175785 bytes, checksum: f499461ebaa5832e5ed7eaeddb46c38a (MD5) Previous issue date: 2008-09-16 / The present study had the participation of twenty dogs from the city of Rio de Janeiro being divided in two groups. The group 1 was formed by ten dogs with behaviors disorders anxiety disorders and aggressiveness and group 2 was formed by ten dogs clinically healthful. Owners of all dogs were interviewed guided by a data form containing opened and closed questions organized in four blocks: general aspects, behavior historical, stereotypic or ritualistic behavior and aggressiveness historical. After being classified as able to participate of the study they were submitted to the high dose dexamethasone suppression test to verify if there was a difference in the hypothalamic-pituitary-adrenal axis among the tested groups. No difference on the basal cortisol could be observed (p<0.05) among the two groups. All the individuals were considered suppressors. Therefore the high dose dexamethasone suppression test did not function as a diagnostic tool to confirm the behavioral problem dogs. / O presente estudo teve a participa??o de vinte c?es da cidade do Rio de Janeiro divididos em dois grupos. O grupo um foi formado por dez c?es com dist?rbios comportamentais transtornos da ansiedade e agressividade e o grupo dois foi formado por dez c?es clinicamente saud?veis. Os propriet?rios de todos os c?es foram entrevistados de forma guiada por question?rio estruturado com perguntas abertas e fechadas organizadas em quatro blocos: aspectos gerais, hist?rico comportamental, comportamentos estereotipados ou ritual?sticos e hist?rico de agressividade. Ap?s todos os animais foram submetidos ao teste de supress?o pela dexametasona em alta dose para verificar se havia diferen?a de funcionamento do eixo hipot?lamo-hip?fise-adrenal entre os grupos testados. N?o houve diferen?a significativa (p<0,05) do cortisol basal entre os grupos testados, sendo tamb?m todos os c?es supressores ao teste. Com isso, n?o foi poss?vel diferenciar animais com e sem dist?rbios comportamentais a partir do teste de supress?o alta pela dexametasona.