Wendy’s joins McDonalds and Burger King in requiring its suppliers to meet animal welfare standards. People for the Ethical Treatment of Animals used billboards and protests against the fast-food company.

Wendy’s officials contend they were in the process of toughening rules for its suppliers and improving treatment of animals set for slaughter before PETA stepped in. A restaurant spokesman further said that PETA protests did not affect sales.

Wendy’s new actions will focus on production units and slaughter plants. For example, the company will conduct surprise inspections of slaughterhouses and take action against those that fail.

PETA now appears to be setting its sites on Wal-Mart. A PETA spokesperson has already started accusing Wal-Mart of allowing routine animal abuse.