Get it Here

I remember reading a story a little while ago. Brian and Justin were living at Britin and there was a hole in the fence or something. A rather large dog found its way onto the property through that hole. Justin discovered the dog and, despite his allergies (quite severe; he had to go to the doctor and find a way to tame his allergies), Justin wants to keep the dog because its a very large breed and the pound isn't hopeful people will adopt it (I think it was a Newfoundland or something).

Justin knows Brian won't want a dog so he keeps it a secret, keeping the dog hidden away in the garage or some other part of the house Brian doesn't ever go in. There's a guy - maybe from the pound or something - who comes by the house and works on the dog, teaching it obedience. Brian comes home early one day and sees this guy and Justin and thinks that there's something going on there.

That's all that I remember. It's not a cheating fic, just a pet fic.

Hopefully someone will know it. Please tell me if you do.

Thanks in advance.

EDIT: Found practically immediately. The link is in the comments. Thank you so much!

Juliet.