I never had a problem in over 20 years, but all it takes is once and you just can't ignore the risk anymore. Right now I'm debating the storm door just because I'm afraid The Twooney (cats) will sneak out with the dogs. They already try to sneak out as the dogs come in through the door.
Years ago, my sibling came up with a friend to drop off some furniture. I had gone out to visit my dad at a show not knowing when they'd arrive. I came home and saw my front door wide open. I walked in and my sibling and her friend were sitting watching tv. She said she remembered I had a dog door so climbed through it.
I asked "where's my dog? She said "with you". I said "no, she was home". I searched in the garage and barn and no dog. I asked again where my dog was. My sibling swore they never saw the dog. I went around the house looking everywhere.
In the bedroom, between the bed and the wall was my shepherd. My sibling made rude comments about my great guarddog. I just said "I'd rather come home to a live dog and no tv, than a dead dog and no tv.".
When I was home, she was right there protecting me. But the tv wasn't worth risking her life. I agreed.
1975 American Clipper RV with Dodge 360 (photo in profile)
1998 American Clipper Fold n Roll Folding Trailer
Both born in Morgan Hill, CA to Irv Perch (Daddy of the Aristocrat trailers)