This is a Simpsons puzzle kind of like JSaint keeping the peace puzzle.
There is Homer,Baby, Poison,Dog They can't support all there weight on a row boat.
You must find a way to get them all over to the other side of the river. Homer is the only one that can use the boat to move so he must be on it all the time.
The baby can not be left alone with the Posion
The dog can not be left alone with the baby.
2 people can be on the boat at a time