2 March 2015 Last updated at 00:26
By Anne-Marie BullockProducer, Costing The Earth
When American Buffalo were cross-bred with domestic cattle, a hybrid dubbed the "Beefalo" was spawned. But the creatures escaped and are now causing environmental havoc in The Grand Canyon. Some want a cull, but is this the best way to deal with the animals?
There is a strange hybrid creature - an alien, the result of a failed breeding programme - causing havoc in the Grand Canyon.
Its destructive ways are alarming both environmentalists and Native American groups who want it removed, yet tourists find it so intriguing they're putting their lives at risk to catch a glimpse.
So just how do you solve a problem like the "Beefalo"?
Out on the canyon's North Rim it's estimated that at least 600 beefalo - a crossbreed of bison and domestic cattle - are roaming.
This thirsty beast can consume 10 gallons each per trip to a watering hole, which means they can drink a source dry in no time.
But the animals' environmental impact doesn't stop there. They also defecate at the watering holes and their hefty weight compacts the soil.
Their leisurely dust baths and healthy appetites leave the ground bare.
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