So recently we put up a new fence at our house as the old rusty one was destroyed to make room for a machine when some plumbing work under the house had to be done. Our dog Zelda has spent her time since then being walked out on a leash. She's mostly-blind with cataracts (it's genetic for her breed) so with a fence in a totally different place, she was thrown off-guard. She heard some kids down the street and got super-excited and wanted to run and bark at them. She ran right into the fence and bounced right off. I could hear one of the boys down the street say "that's a stupid dog".