Pseudomonas aeruginosa is a Gram negative rod shaped bacterium, opportunisticÂ pathogen. It is associated with the infection during low immunity status of the host.Â However in all warm blooded animal it is associated with the wound infection. AÂ wild hanuman langur (Semnopithecus entellus) with compound fracture in the legÂ region was referred to the Clinics, Faculty of Veterinary and Animal Sciences, WestÂ Bengal University of Animal & Fishery Sciences (WBUAFS), Kolkata, West Bengal,Â India by Forest Department, Government of West Bengal. The amputation of legÂ was performed under proper anaesthesia. A surgical wound with pus was detectedÂ during post operative care. The wound was not responding to the prescribed antibiotic and other supportive therapy. The pus sample collected in sterile vial wasÂ referred to Department of Veterinary Microbiology of the University for culture andÂ antibiotic sensitivity. As per the staining property, colony characteristics and biochemical profile, the isolated bacterium was identified as Pseudomonas aeruginosa.Â The isolate was found resistant to all of the studied antibiotics except enrofloxacin.Â The antibiogram result was communicated to the Clinics that effectively cured theÂ surgical wound in the affected langur. Dosage of used enrofloxacin was 5 mg /Â kg body weight for 5 days.