MIAMI (AP) -- An animal rights group claims a cheese supplier to Miami-based Burger King abused its cows.

The organization Mercy For Animals says hidden-camera footage shows cows being kicked, punched, dragged with tractors and beaten at Idaho's largest dairy operation. Three former dairy workers with Bettencourt Dairies' Dry Creek Dairy in Hansen have been charged with misdemeanor animal cruelty after the undercover video surfaced.

The group is asking the world's second biggest hamburger chain to adopt stricter animal welfare policies and end its relationship with the supplier. It has planned for a press conference Wednesday in Miami.

In a statement, Burger King officials say the company doesn't tolerate or condone cruelty to animals.

The organization also asked Kraft Foods and Wendy's to stop using milk from the Idaho company.

Copyright 2012 The AP.