What's eating my rhubarb? Not us ...!

Back from hols and picked up the cat this morning. I think he's worn himself out asking to go out, come in, go out again etc. He is flaked out on my neighbour's recycle bin, guarding their house and hoping to be admired by passers by. I tried snapping him ... but it was a rubbish image ... so I thought I'd ask your views, instead, about my lacy looking rhubarb.

I suspect it is our usual visitors ... snails galore. Do you think I'm right