I guess there are many scenario's for this logo, but the particular one that came to mind for me when putting it together, was this:

A guy with PTSD is walking is dog. The dog decides it needs to piss, and thus does so on the nearest tree. That tree is in someone's yard, and the owner is watching the dog piss on the tree. The owner of the yard then abuses the owner of the dog (suffering PTSD) and the dog... (you can see where this is going... can't you?)

So now, the owner of the dog is being calm (if they have already attended a PTSD course... maybe), until such time that the owner of the house, let's call him "x", decides to continue abusing the owner of the dog, and the dog. Well, now most people can take a bit off abuse, except if you have PTSD I guess, but when people stoop to your animals, well... all's fair in love and war, something has to give.

At a rough guess, "x" is about to get the shock of his life. Let's say that the owner of the dog is an ex war veteran, plus suffers from short arse disease! That now makes a cranky little short veteran with PTSD... oh... and a dog! So "x" now comes toward the owner of the dog, immediately startling the owner into thinking... retaliation! Now "x" decides he is going to:

a. kick the dog
b. kick the dog and abuse the owner, or
c. just continue verbally abusing the owner

Well, what "x" didn't realise is that the owner of the dog has PTSD, and short persons syndrome (we all know how short folks make up for a lack of size with a bigger bark) which means; it doesn't matter which option "x" has decided, as he is now hitting the pavement after being punched several times. At this point, I guess I would also be encouraging my dog to continue his pee on "x", just for total embarrassment factor!

So, that is the story of the logo, and why it contains a dog having a wizz, and a sign with a gun, "beware of owner".

What's your interpretation?