CHICAGO (CBS) — An animal rights group says it documented a “culture of cruelty and neglect” at a dairy that is a major supplier to Northfield-based Kraft Foods.

The video released by the group Mercy For Animals is graphic.

It shows “workers viciously beating and shocking animals and deliberately twisting their tails to inflict pain,” said Rebecca Frye, the director of education of Mercy for Animals.

Wired with a hidden camera, a Mercy for Animals investigator worked for three weeks at a major Kraft cheese supplier in Twin Falls, County, Idaho.”

Frye says three workers at the Bettencourt Dairy in Idaho are charged with cruelty to animals.

The dairy released a statement that says it has a zero-tolerance policy and that it’s fired five employees.

A spokeswoman for Kraft says the company does not condone animal abuse and that Kraft is working with its dairy suppliers to ensure high standards.

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