A closer look reveals a long list of breeds, some that even professional fanciers don’t suspect, clearly lionized in one way or another. The early twentieth century saw a short-lived fad for something called a “Danish Lion Dog”—perhaps a Great Dane? ... While smaller dogs are common candidates for lionization, any breeds valued for their feline appearance or demeanor should be considered “lion dogs.” One need only look at old artworks to see hunting and war dogs traditionally portrayed with ferocious grins, lionlike feet, claws and teeth, and powerful tails.
"Toby," Punch magazine's loyal mutt mascot, is lionized.