Pacific Chorus frogs like vernal ponds. There are no fish in them to eat the eggs and tadpoles. They are warmer than bigger ponds so the eggs go thru metamorphosis to froglet much quicker. Which is good as the vernal ponds dry up after spring. My ponding friend sets out tubs with plants in them for them to use as breeding and I get a bunch of eggs.
Our big pond, while it was here, was too full of fish for them. I've made several habitats like this for them on my deck.