I use a LG neckband bluetooth headset to listen to podcasts on my morning walk with the dog.

Could look something like “I’m willing to act as a bird dog/runner for investors in these 5 area codes.  

It could also indicate he has an urgent need for cash and that could lead to several issues (unpaid taxes, unpaid mortgage/foreclosure, deferred maint and so on).  

It is livable (no renovations urgent before moving in) , but in need of updating.

Now his dog has learned to jump over the fence.  

In addition, the house had a marijuana smell to it.I'm thinking it could be one of a few things:1) The tenants are concerned the owner is selling the house which means they might lose their tenancy and this was a way for them to disrupt the process to "keep them in the house"2) There was marijuana in the basement and they forgot the inspection was happening, and they didn't want to get caught with having contraband in the house as that would be means for eviction.3) There is actually somehow a flea infestation down in the basement (why the basement though when they have no dog and haven't reported it to the landlord?)

Is there some type of insurance that I can make a renter have or a contract agreement if they bring a dog that protects me if their dog were to bite someone on my property?

Typing up a letter or telling your dog doesn't count.

For example, the case of service dogs and emotional support animals. 

Same dog, different nametag.