Do Frogs eat Onions?

...asked the missus looking out the kitchen door. "What?", I said. "Something has been eating my onions. I bet it is that frog." I've not managed to catch it on camera yet, but, yes, we have a frog living among the chilli pots and tomato and aubergine grow-bags. The watering they get must make them a bit of a haven in this weather. And yes we also have some onions there too, and something has been nibbling them.

But do frogs eat onions? Well of course they do. The french are famous for their onions, aren't they?