I have a decorative pond as well. It used to be black plastic but now its like a pool frame (hard plastic) Anyways I have frogs in it. They somehow last all winter. I think when it was the plastic sheeting they just buried underneath it into the dirt. With the pre fab one they sneak down the outside sides and bury themselvesI found a salamander next to the chicken pen door a couple of weeks ago and promptly moved it to a place where it would have less a chance of being pecked and gobbled up. We have a few resident frogs in our little bird "pond" (a buried plastic tub with plants around it). Every fall, they die because they think they can bury themselves into the bottom, but it's not mud -- just plastic. I want to try to relocate them before the deep frosts hit this year. Last spring it was gross cleaning out bloated dead froggy corpses from the pond water.
TOB
