If you catch them off guard after they've become comfortable, you can often learn what's really going on, or you can see that they all of a sudden don't get eye contact or they blurt out something they didn't intend to share like, "My aunt doesn't want me sleeping on her couch anymore," etc. 

Some came from crappy backgrounds and were super anxious, or food guard, ect...especially when on leash dogs are reactive because they feel trapped. 

Some are great but a lot of people are drawn to pit bulls because they are such effective fighters / guard dogs, not because they are great loyal dogs.

I think you're a guarded and careful person, but residential rental real estate is a kind of dirty business.

I have been in the military now for almost 20 years, 12 active duty and 7 in the National Guard. 

The old guard of lease option and subject to selling to owner occupants are fighting tooth and nail to find a way around Dodd Frank and CFPB.

Then guard that basket."  

@George Taylor  NMLS is not required for commercial loans that are not 1 to 4 units.. in 11 states 1 to 4 units and its required.. many companies get caught off guard on this one.these lenders as I stated I think they make that a requirement to weed out wanna bee brokers who don't want to take the time and effort to get licensed.. at least that's my thought on it.but just go to lendinghome's website and click on the broker referral tab you will see

I have used REI Guard on 10+ flips.  

We ate breakfast in a place with a security guard toting a sawed-off shotgun.