Fenrir, or monstrous/semi-feral forms for certain existing species

More specifically, I'm talking of having a more feral/monstrous looking appearance for wolves and other species that anyone would be interested in. Say, taking a default anthro wolf and give the option of having a more feral posture and proportions, more menacing and larger? Who wouldn't want to play with a big sexy beast of a monster wolf?

this is an example of what I mean: This big sexy beast
Another example

its not quite feral, not quite anthro, a blend of both.