The idea of having a dog get into the fridge is only funny in a slapstick kind of way..... like someone slipping on a banana peel (who might actually get hurt). In truth, it can be very scary.
Virginia learned how to open the fridge about 2-1/2 years ago.... in a scary bad episode that included her eating cream cheese and chocolate cake..... then being rushed to the vet's to check her heart rate from the chocolate and needing sub-Q fluids.... followed by her throwing up 7 or 8 times that evening.
She apparently figured out how to apply pressure on the rubber seal in just the right way. Another time I caught her using her teeth (!) on the corner of the door and pulling!!!
As Joe may know w/Murphy, once a dog figures it out, they will persist. I compare it to a slot machine in Las Vegas where there's always a payout. If they get an instant reward every time they break in, they're going to continue to do it.
We now have 2 child safety latches on our fridge door. It's a real conversation piece, but it keeps her safe.
~Virginia & Tinker's Mom