The urinary bladder can vary greatly in size, depending on the volume of urine held in it. It is a light pink to gray in color. It can have a thick appearance like the photo to the bottom right when it is fully contracted down. The outer surface should be smooth and uniform. The inner surface will appear wrinkled if the animal died with an empty bladder.

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Normal tissues

Common urinary bladder lesions

Necropsy of the urinary bladder