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Dark Tower The Gunslinger - The Little Sisters of Eluria Vol 1 5 Textless

Roland and the Jesus Dog face off against Sister Mary

Jesus Dog or Cross Dog is a nickname given to the dog with a patch of fur shaped like a cross on its chest. Roland first encounters one in Eluria, where it is chewing on the leg of the dead James Norman.

The cross on its chest keeps it safe from the Little Sisters.

When Sister Mary tries to impede Roland's escape from the Little Sister's Tent, Sister Jenna calls upon the Cross Dog, which comes and rips Sister Mary's neck open.