Sudden deaths without any specific clinical sign occurred among one year old young ones on Siamese crocodile (Crocodylus siamensis) farms in Hainan province, China, during winter and spring in 2012 - 2013. The autopsy showed that the internal organs seemed normal except full of clear ascites in abdominal cavity. There were total six bacterial species isolated, Edwardsiella tarda, Proteus penneri, Proteus vulgaris, Enterobacter asburiae, Citrobacter freundii and Micrococcus luteus from either the heart bloods or the spleens and livers. The virulence of isolated strains was tested by intraperitoneal inoculation in female Chinese edible frogs (Rana rugulosa or Hoplobatrachus rugulosus). The six-day mortality revealed that E. tarda was the most pathogenic, whereas P. penneri and E. asburiae exhibited no infection at all, and the rest demonstrated similar inconspicuous toxicity. All these findings suggest that E. tarda would be the principal suspect causing death of Siamese crocodile. The sensitivities of the E. tarda isolates were tested against 20 kinds of antimicrobial drugs. The results showed that ceftazidime, norfloxacin and amikacin were highly sensitive to the isolates of E.tarda.

An investigation of sudden death in farmed infant&nbsp;Siamese&nbsp;crocodiles during winter and spring in Hainan, China

Background: This study aimed to characterize mammary lesions in domestic cats through histopathological analysis, in order to diagnose the main types of mammary tumors and evaluate their distribution. 
 
Methods: Sixty female cats, belonging to two breeds (Siamese and crossbred) and aged between 8 and 10 years, were examined between November 2022 and November 2024 in two provinces of Northeastern Algeria (Skikda and S&eacute;tif). 
 
Result: Clinical examination revealed mammary lesions in 30 cats (50%). Histopathological analysis identified malignant tumors in 18/60 (30%), benign tumors in 9/60 (15%) and atypical hyperplasias in 3/60 (5%). Malignant tumors were the most frequent, with several histological subtypes identified, including complex carcinoma, tubulopapillary carcinoma and squamous cell carcinoma. These findings emphasize the predominance of malignant forms in cats, the diagnostic value of histopathology and the importance of early detection and preventive measures such as early ovariectomy.

An investigation of sudden death in farmed infant Siamese crocodiles during winter and spring in Hainan, China

Histopathological Study of Feline Mammary Tumors in Northeastern Algeria