Times, dates, duration and type of noise.
Record the noise coming through your ceiling. Stand outside their apartment door and record the noise coming through it.(verification of unit)
Write them a diplomatic request(s) for them to control the noise. (Keep copies, give one to the landlord each time)
Don't go up and confront them unless you're wearing a body-cam, a hidden one preferably. ( If they're drunk, you might get punched.)
If you collect enough hard evidence, your credibility won't be questioned.
Call the cops, repeatedly if necessary. Get an "incident card" with a number on it each time. When we called them, they came and stood in our apartment and witnessed the noise themselves.

You have the" right to the peaceful enjoyment of your home." Remind your landlord of that, and make sure he understands he has a responsibility to act.
And good luck! I've been there.

I am not a lawyer. Consult professionals. But...this my personal advise:
Document days and times of disturbance. Call landlords to address it, again document days and times. After two tries w/landlords, call police to address noise, document day and time. Each time, call police. Document days and times.
Check your lease. Any wording about noise? Note it.
Now...after calling police the first time, send a letter to the landlords. Mention the lease specifying noise and quote the language. Also, specify that the offending parties are "interferring with the enjoyment of your space". List all issues with date and time, list the date and time landlords have been alerted and how police are called.
Cc Residential Tenancy Branch so they have it on record.
Follow up with them, noting date and time.
Either you have a record the landlords can use to evict tenants, or you have a record of inaction to get retribution.
The power of adminstrative bureaucracy cannot be underestimated.

unless you have someone to put it.

Lose the Mastif... or go rural

Move somewhere and don’t tell them you have a dog. Neighbours are awful and will rat you out so if you are able to, move into a house or a co-op where pets are allowed.

I know it would be heartbreaking but you could put your dog up for adoption. Huge dogs shouldn’t be living in the city in cramped quarters anyway. It’s mean.

They don't give a fuck about diminishing your quality of rest, sleep, and relaxation. Time these kids got a lesson on SHUT THE FUCK UP.

I don't know how or why you got the giganto-beast, but I appreciate you trying to do your best to get shelter for yourselves and live with some dignity. I have no idea how to handle that. Sounds awful.

Go upstairs with your dog and tell them like you’re a hell’s angel that if they don’t shut the fuck up that you’re going to seriously “do something about it”

Under no circumstance would I ever abandon my beloved dog. I live in a spacious ground level apartment with our own fenced in yard. If you knew anything about this breed of dog they make wonderful apartment dogs because of their general laziness. He gets plenty of exercise and thrives where we live. The issue at hand are excessively noisy neighbors not my dog. Seems like we're getting a little side tracked here... Thank you to the people that offered constructive and helpful advice.