In fact, I believe your attorney is required by the bar to report him for unethical behavior. 

I will say this though, from a long term perspective I highly encourage you to work this out and find a solution BEFORE this behavior involves you.

At minimum, you may be able to use the problem regarding the dog to lower the price with the seller.I think there are insurance companies out there now that will cover pit bulls with no history of aggressive behavior.  

Besides the dropping that will be on every square foot of carpet that will turn it into a gurgling primordial ooze a large bird with any sort of stress or behavioral issues will often act out in a destructive manner. 

It's a whole different ball game for us with a very different set of rules about drunk behavior among friends or in public than here in the States.We are, granted, not generally perceived as a deeply inhibited and socially reserved people when sober.

You can't evict someone for being mentally ill, but you can evict for behavior that violates the terms of the lease.

This behavior needs to be known so it does not continue.

And yes, you're thinking, but your contract says that accepting late rent doesn't waive your right to collect it on the 1st - but what happens is, your behavior ends up waiving the due date by accepting it late.I've heard of landlords who love late fees, as it's extra profit. 

Their phone behavior is a clue as well.

I'd change the no excessive late payments to no more than one late payment - otherwise, it's too subjective.You can add lots of other things like - smelling like smoke, rude behavior, unruly kids, bickering adults, adults yelling at kids, showing up with rude friends, filthy vehicle, having someone other than applicant who is doing all the talking, showing up late, sounding drunk when they leave a voicemail, not filling out application completely, asking for lots of changes like new carpet or paint (they'll be difficult to deal with), tenants who never ask where the laundry is or look to see how big the closets are or ask about parking (they are desperate to take anything), not bringing documents when they said they would -- the longer the legal list you have, the better.