Snowie once dislocated his paw. Racing wildly with his dog friend, caught his foot on a tree root, took a tumble, screamed, and his paw hung limp. While I was feeling it trying to work out what was wrong, I heard a click and he could stand up. I supported him by holding his harness while we walked to the car—took an hour through the forest, over rocks and logs. He limped a bit. When I told the vet, she said dogs can roll over their paws like we roll over our ankles and can sprain their paws/ankles. So perhaps that is what Poppy did? Hope she feels better soon.