That is a funny story!!
We had a dog when I was a kid who'd get out of her pen. She was a beagle. She'd climb the tree in the pen. She got knocked up, so dad moved the fence so the tree was outside the pen (I'm told homes were found for all the pups.) So then she started climbing the fence. Got knocked up again (this was the early 70's--spay & neuter wasn't a common thing yet). We kept that pup (only 1 in the litter), & dad installed electric fencing. So, then she'd roll the pup up against the fence to see if the current was turned on! Mother of the year she was not. Dad ended up selling her to a couple of hunters.