Now that I know that Sammy and Sybil are not hazardous to my health, I love watching them in the pond at night. They come out just after dark, just after I put my garden lights on. They seem to love to play in the fountain from the pond spitter and play among the plants. I think they live under the pond liner itself so they really need a shower after laying in the dirt all night. After that, they go out frogging and bugging, then early morning, just before dawn, they come back and take another shower before heading back under the pond again. I do love watching the critters in my yard.