Cattle manure currently contaminates every national forest in California. Cow manure carries a series of diseases & has already contaminated most U.S. rivers. Cows are not native in U.S. ecosystems, & their manure must be picked up in order to remove it from being an environmental hazard & especially from contaminating water sources & waterways. Pictured below: Cow manure lays along the Kern river in the Sequoia National Forest.
Cattle are native to most tropical and subtropical parts of the world except Australia and New Zealand.

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