The Wildwood Trust says five European bison are "thriving" at Castletown Estate near Rockcliffe.
The Environment Agency says it received almost 500 complaints from residents near the Cumbrian site.
Cumbrian villagers say a landfill's smell is "horrendous" and the waste mound is getting bigger.
North-west Regeneration says it will lodge an appeal for the site near Carlisle.
Residents objected but the firm says studies found there was "no detrimental impact" on health.
Cumberland Council's planning committee votes to reject the plans for the Rockcliffe site.
Residents raise concerns after inspection reports found alleged breaches at the site.
Rebecca McLellan is using her business to encourage others to breed the "at risk" Castlemilk Moorit.
No prosecution was brought after the fire but residents fear something similar could happen again.
