Dale Evans and the coyote

On a cold day in downtown Billings I am browsing in a thrift store and uncover this book, first published in 1956. A western morality tale where Dale Evans, wife of Roy Rogers and Queen of the West, teaches little Bobby and Kate Starr rule number 7 from Roy Rogers’ Cowboy Code for Children: ‘be kind to animals and care for them’.
But the code doesn’t seem to apply to all animals in this fictional and romaticised view of the west and its interesting to note that:
native coyote = bad
imported calf = good