Cutting up worms

[elliotulysses]

What I am trying to say there is if you use metal scissors to cut your worms up, so long as they're nasty rusty scissors there's no harm there. If you had a rusty nail in your tank, that is another story.

From looking at the internet it says that cutting worms in half only leads to one live half and one dead half. Is that true? I saw the diagram up there to try to get two living segments, but I am unsure of exactly where to cut.
If not, do you think two 3" frogs could eat one red-wriggler type worm?