Pond Frogs Didn't Survive

[Elldee]

I actually bring the goldfish indoors since the deepest part of the pond would be too crowded for 9 fish and 4 frogs to all try and hibernate in. The water was fine last year. haven't tested it this year. That will be done in late April/May once we get the pump running, debris cleaned out, do a 50% water change, and prepare to put the fish back in.

do frogs hibernate under water?