Firebellies are not toxic by touch. Nothing about them is going to hurt you or your children. Don't drink the water that they are swimming in or eat them and you will be fine. Simply wash your hands before and after handling them just as you would with any other frog. They are very friendly frogs and very outgoing. They are also very forgiving and tolerant. You won't have to worry so much out heat and humidity as they can handle a pretty good temperature range. You could just get one of those Tetra Fauna submersible heaters for their water area and the overhead light should be fine for them. If your house is super cold get a side mounted heat pad for extra heat. They eat like pigs so as long as they're healthy you won't have to worry about hunger strikes. Check them out...you can get them at Petsmart and they come in bright green with a red underbelly. They also come in muddy greens.. I just prefer the brighter colors. Type "Firebelly toads" on YouTube and you can see them in action.