haha... I put in a dog door for my <10lb Havanese cross. Very small door installed on a steel/aluminum screen door.
Middle of summer I let him out and went back to sleep. He came back inside and went to sleep. Hour or so later I hear a noise, but think nothing of it. Dog suddenly starts howling, and I hear the clicking sound of a dog walking across the floor.
One of the neighbours pitbulls has jumped the six foot fence, and squeezed himself through the small opening.
Luckily he was friendly.
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The '66 912 Bastardization project has begun.
Note to PO's: LAY OFF THE FREAKING BONDO!!!!
The science was settled: Earth was flat.
Galileo : Flat Earth denier.