In Western Washington, we only have two common frogs. Tree frogs and red-legged. The tree frogs are quite small, and very noisy in the spring. The red-leggeds are larger frogs. They are very quiet. You might get a little squeak out of them if you surprise one.
Bullfrogs have been introduced here from the east coast. They're a plague. They eat everything and unhinge the natural amphibian populations. We have a "wild" pond between our house and the creek which houses both species of frogs as well as newts, Northwestern salamanders, long-toed salamanders, and probably a few other species of salamander. Fortunately, bullfrogs have not discovered it.
Although thousands of tree frogs hang out in the wild pond, they appear to be only occasional visitors to our managed backyard pond. The "pond" was until recently a plastic tank. Its vertical walls didn't lend to easy escape, so maybe that scared off the frogs? We ripped it out just a few weeks ago. Found one long-toed salamander in the tank during the demolition project. Long-toeds are aquatic salamanders, meaning they lay their eggs in water. Took it down to the creek.
Our new pond has a gradual rock bank, so we may have more frogs and salamanders visiting. I don't know how smart these guys are about assessing the likelihood of egg survival, but I'd imagine they can figure out that those orange fish swirling around might not be a good sign...