Urban and rural foxes equally persistent/innovative according to one study

Study here. Essentially, they put food behind some puzzles and figured out how many foxes approached the puzzle and how many solved it. More urban foxes approached the puzzle than wild ones, but they solved at about the same rate. (I will admit I skimmed the actual study, so correct me if I’m wrong!)

Nighttime footage of foxes trying to solve puzzles to get at food here.