Thanks very much for your help, Doomer!

I'm not 100% sure about the Latin -- I believe you're right that a gerundive form (horrendum) might be more correct if you were constructing a grammatically complete sentence in Latin, but the adjective horribilis is definitely used in biological taxonomy -- for example, the N. American "grizzly bear" is Ursus arctos horribilis. (But there's actually no such wolf species as Canis lupus horribilis.)

Also, "to go for a волк" is a silly phonetic pun on "to take a dog for a walk." (гулять с собакой). It's meant to be a not-very-clever pun, because the wolf's own collar has betrayed him and he needs to invent an explanation very quickly.