Burger King

"No one love[d] cattle more than Burger King," according to Miss Kizlet. She once said that in 2013 as a metaphor for how her client protected his human flock. (TV: The Bells of Saint John)
 * ''Exactly what "Burger King" is has not been specified in-universe. In the real world, it's a popular restaurant that serves meat, especially burgers, hence her joke about cattle.