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gaur ajo mahisah krsnah
sukaro gavayo ruruh
dvi-saphah pasavas ceme
avir ustras ca sattama
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
O purest Vidura, of the lower animals the cow, goat, buffalo, krsna stag, hog, gavaya animal, deer, lamb and camel all have cloven hooves.