I planted a bit more corn and beans. Then I saw this through the window:
Even though Dora HAS dug in the beds, it looks like the major culprit is Master Murphy.
Amazingly, a couple of corn plants survived. I need to adjust my approach to the yard, planting and pups. We’ll figure it out. Mostly I think that it’s the newness of the beds. Both pups like to dig to nowhere, so the beds are attractive. Murphy also enjoys dirt baths regularly.