with what I've seen so far.. But, you are correct: you can do your best and they can still manage to find a way out, sometimes.. I am relentless with making sure the gate is properly closed, but one day Lucie, even tho blind, managed to find her way out.. I have a hard/fast rule that when we leave the house, I always make sure I have eyesight on each dog before we leave.. Had I not had that rule, we would have left for several hours with Lucie outside the back yard.. as it stood, I ran outside into the front yard and saw here wandering blindly 3 houses down.. that's probably when my heart issues started..
Friendship is like peeing your pants.. Everybody can see it, but only you can feel the warmth..