...The lining membrane ofthe prepuce in these animals cannot be readily laid bare, and that partis always the most seriously attacked... 
Dinks, Mayhew, and Hutchinson 「The Dog」
...The prepuce sometimes is not to be withdrawn, andthe struggles of the animal are excessive when its retraction isattempted...
Dinks, Mayhew, and Hutchinson 「The Dog」
...A closeobserver may notice the cylinders of hard, earthy materials encircling thetufts of hair at the opening of the prepuce...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...The prepuce is a fold of the internal membrane of the verge of the anus, as in the bird; and the penis, when retracted, is entirely concealed...
David Collins 「An Account of the English Colony in New South Wales, Vol. 2」
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