A detailed post mortem was carried out on a male Bryde’s whale
Balaenoptera brydei, a cetacean of suborder Mysticetes, with a wide geographical distribution. The stranded whale, weighing approximately 3.5 metric tons was found beached along the Pekan Nenasi River, Pahang in East Coast of Malaysia facing South China Sea. Gross pathology showed severe hemorrhagic gastritis, probably
due to foreign material found compacted in the multichamber stomach, severe congestion in the various vital organs due to toxemia, and severe endoparasite burden in the intestine. Thousands of Digeneans
were found in both the caecum and colon. Morphological identification was carried out on these parasites which were identified as Ogmogaster species. As co parasites, the acathocephalan worms Falsifilicollis species was also detected in the large intestine. Histological examination indicated severe bronchointerstitial embolic pneumonia, chronic interstitial
hemorrhages, intra alveolar septa thickening in lung tissue; chronic hepatic interstitial hemorrhage, hepatocellular and centrilobular degeneration on the liver tissue; renal tubular and glomerular
necrosis in kidney tissue; splenic necrosis and hemorrhages; intestinal mucosal layer necrosis and severe intestinal villi necrosis. The continuing survival of Bryde’s species whale is precarious, because of disregard for appropriate measures for their
conservation and to conduct appropriate study for the cause of death.

Oestrosis is a worldwide myiasis infection caused by the larvae of
the fly Oestrus ovis (Diptera, Oestridae), that develops from the first to the third stage larvae. This is an obligate parasite of the nasal and sinus cavities of sheep and goats. The Oestrus ovis larvae elicit clinical signs of cavitary myiasis seen as a seromucous or purulent nasal discharge, frequent sneezing, incoordination and
dyspnea. Myiasis in an incidental host may have biological significance towards medical and public health importance if
the incidental host is man. This infection can result in signs of generalized disease, causing serious economic losses in sheep and goat reared for meat and dairy production. Due to the large numbers of small ruminants imported into Malaysia from countries which are endemic with oestrosis, precautionary measures should be exercised to prevent this infection from establishing here. In 2009, there was a report of respiratory distress (pneumonic sign) accompanied by high mortality in Damara sheep that was imported from Australia. Investigations showed the presence of Oestrus ovis larvae in affected
sheep. The post mortem was conducted in the field and the larvae were discovered in the tracheal region. The larvae was confirmed as Oestrus ovis using the appropriate keys for identification by Zumpt. The carcass showed pulmonary edema with severe congestion of the lungs accompanied by frothy exudation in the bronchus. There were also signs of serious atrophy (heart muscle) and mild enteritis
(intestine histopathological examination showed, there was pulmonary congestion and edema, centrilobular hepatic necrosis, renal tubular necrosis and myocardial sarcocystosis. The sheep also showed chronic helminthiasis and Staphylococcus spp. was isolated from organ specimens.Oestus ovis infection is rare in Malaysia, as such this case posed as an unusual case for investigation.