Frogs in warm water?

A small family outing to Walterville pond last week created hours of imagination and play. While there, Casey caught 4 frogs and gave them to the littles. They had sooo much fun "mothering" these little frogs. I overheard them talking about all that they were going to teach them and show them. We kept them in an aquarium outside. One cozy morning amidst the frost, we awoke to find four little froggies swimming under a layer of frozen water. We brought the aquarium inside and Wesley took over adding warm water to break up the ice. She then placed warm water in this little leaf and put all the frogs together to keep warm. What amazed me was how long those frogs stayed together. I guess mommy always knows best:)