: "Cattle in Brazil, like this Zebu bull, represent a different gene pool from U.S. cattle and could help scientists locate genes for desirable traits like tick resistance and heat tolerance." photo about 2 years 0 Gray and Green Iguana Close-up Photography photo about 3 years 0 Front view cold blooded herbivore photo over 3 years 0 Iguanidae creature lizard photo over 3 years 0 Kaltblut reptile animal photo over 3 years 0 Kaltblut reptile animal photo over 3 years 0 Kaltblut reptile animal photo over 3 years 0