Comparative Morphological Study of the Kidney in the Domestic Dogs and Cats
2025
Huda Ahmed Sharif, Thaer R. Mhalhal, Mohammed A. Ali.
The objective of the present study was to conduct a comparative analysis of the renal anatomy in dogs and cats. A sample consisting of twenty healthy adult subjects (ten domestic cats and ten domestic dogs) was utilized for this investigation. The average weight of the local feline population was recorded at 2 ± 0.4 kg, whereas the local canine average weight was significantly higher at 20 ± 3 kg, with both species represented within the age range of one to three years. The anatomical and morphometric attributes of the kidneys were examined post-slaughter. Observations from the gross anatomical assessment revealed that the canine kidney is characterized as a single, bean-shaped renal organ with a smooth surface, possessing a solitary renal papilla. The renal cortex exhibited a reddish-brown hue, while the renal medulla was distinguished by two zones: an outer, darker zone and an inner, lighter zone. Both kidneys are encapsulated, situated against the dorsal abdominal wall within the lumbar region, lateral to the vertebral column. The average weights of the right and left kidneys were found to be 50.05 ± 5.44 grams and 53.97 ± 7.42 grams, respectively. Additionally, the average lengths measured 5.18 ± 1.87 cm for the right kidney and 5.36 ± 2.18 cm for the left kidney, with widths recorded as 3.47 ± 0.68 cm for the right and 4.23 ± 1.20 cm for the left.
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