1. Kidney, Ureter, and Urethra

Right kidney is more cranial than the left in most species except$

Pig

In ruminants the rumen size pushes this organ to the right half of the abdomen$

Left kidney

Left kidney is almost completly invested in peritoneum$

Ox

Bean shaped kidney$

Dog, Cat, Goat, and Sheep

Irregular oval kidney shape$

Ox

Right is heart shaped and left is pyramidal$

Horse

Flattened kidney$

Pig

Cat, Dog, Goat, Sheep, and Horse$

Unilobar: smooth surface and a single renal papillae

Multilobar with smooth surface and multiple papillae$

pig

multilobar with lobated surface and multiple papillae$

Ox

Wall of the proximal portion of the ureter contains mucous producing glands$

Horse

Urethra is short and wide$

Horse

Urethra is long$

Dog

Unusually long urethra

cat

Urethralis muscle encloses the submucousal diverticulum, causing difficulty in catheterization$

Cow and sow

Much narrow than mare urethra; runs below vagina$

Cow