When I did the inspection prior to closing I found out that the dog they have does its business in one of the bedrooms.  

It was just me, my dog, and my girlfriend.

"cute dog, how old is he, where did you find this little cutie."

They'll text if i left my garage open, they've brought our runaway dog back, signed for deliveries, they don't make a ruckus on weekends, etc...That being said, I would like to get their rent up to $1200-$1300 come lease renewal but that would be another significant increase.

Liquor bottles everywhere, dog crap, holes in walls...

@Allison PanilaI’m not sure if it’s legal for the landlord to raise the rent in your area ,but it’s safe to say your friend is breaking the lease and is trying to rationalize bad behaviors .Id try to get her and her boytoy out too.

That way if it is a real dog you just walk away and not buy it.

On her application she stated that she had no dog.

Of course then you will have people asking you how does the dog get the door open.

In addition, they have always paid my $50 late fee, which compensates me for allowing this behavior temporarily.