Who's Been Swimming In My Pond?

On Saturday I brought the only blob of black jelly in the park (which is still dried-up) back to the Best Makeshift Tadpool, where it expanded into a large mass of typical frogspawn. It had a dusty look about it but seemed healthy enough.

Events at home being as they were, I hadn't checked up on it until today...and what a surprise!!! Someone has been laying their own spawn in my tadpool!!! That's it, on the left, a great big blob of it.

A neighbour did say that 'if there is a pond, there will be frogs'. Clearly, they couldn't wait until our proper pond is finished.