[Captain Compassion]

Wild horses are an invasive species. They drive off native species such as deer, antelope and wild sheep.

[EinNYC]

Wild horses are an invasive species. They drive off native species such as deer, antelope and wild sheep.

And cattle are native species that don't eat grass which could be used for deer, bison, etc.? Horses were native here thousands of years ago. Not cattle.

[Axenolith]

No they aren’t, they just had about an 11,000+ year hiatus here after the last glaciation and the first people arrived here.