The cardiac evaluation of wild animals is still a wide and largely unknown field for several species. Therefore, through complimentary examinations such as radiography, echocardiography and serum troponin levels, this study aimed at describing the values observed in 12 crab-eating foxes (Cerdocyon thous) anesthetized with a combination of intramuscular ketamine and midazolam. Through the use of this chemical restraint, a clinical, radiographic and echocardiographic (linear and indexed values in M-mode) evaluation of the 12 male specimens included in the sample group. Among the findings observed in comparison with domesticated dogs were a decrease in the dimensions of the septum, wall and cavity of the left ventricle, as well as a deceleration in the E wave (EDT), which could be correlated with the maintenance of the serum troponin dosage values (cTnI). Therefore, M-mode echocardiography has proven to be safer and comparative to other species of wild canids when performed through indexed values. In addition, when evaluating the systolic function and segmentary contractions, the anesthetic combination did not have any effects on the results of complementary examinations performed in crab-eating foxes (Cerdocyon thous) included in this study.

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