agreed
If a permit is required then that is what the person should have done. I don't think I read where they were roaming in the back unsupervised, but if that were the case then you are asking for trouble. Especially knowing you had a neighbor that was frightened. Shoot Im scared of spiders and bugs...I have friends that keep them but I would really prefer if possible dont pull them out and put them in my face.
I would hope...but then again its a niave thought (wilomn is gonna bust me on this) that they would NOT take advantage of just walking in due to giving up your rights whenever they felt like it. Maybe if there was cause or reason...I can see.