Oh yes! Ours have to swim (or waddle along!) for their lives because of newts, grass snakes and I guess the fish (but not sure about that? Do the fish eat them aswell?)
We feed them titbits and thankfully a good few should survive.
They enjoy the fish food but have to get in quick before yellow beak the ageing tame blackbird and his family swoop in and swipe the lot!!!!
We used to have so many frogs a few years back, then suddenly there were very few. Hopefully this year there will be a recovery.
Not sure what my pup would make of a frog!! He has never encountered one yet!!! :o)