Twice in the last week I've encountered a huge hole by the rhubarb on my morning walk round the garden.
I say huge, but it's really about a foot across and the same deep. It's not like the holes dug by foxes and cats to cover their p** - it's bigger and I didn't find any droppings.
It's right by the decking that's next to the pond that the frogs and toads often hide under - maybe the animal was trying to get at them? And next to my big rhubarb (the roots have been disturbed - I hope it's ok).
What might've done it? How can I discourage it?