Jacob + Nessie? WHAT!?

Okay I think I've posted this before but I'm not sure on what group. Quite frankly I don't think I'll EVER find it since most of them are gone now but anyway this is my topic: How is it possible for Jacob to imprint on Nessie?

Accorinding to the books, NOT my opinion, when a werewolf imprints on a subject, person, human/vampire it's because he has the greatest chance of creating a "puppy." I'm not sure how high his chances are of creating a "puppy" with a hybrid like Nessie. Correct me if I'm wrong but I think his chances are VERY slim. I know if there's another book (*sigh*) Meyer will find a way to make it logical that their together (idk how! but it will happen). What's your opinion? Have a theory on how its possible? Comment ^_^