no grummite eggs cannot be hatched and are in the game purley as alchemy ingredients
No, snails do not make a nest, they do stay on a nest, they do not hatch eggs. The eggs mature and hatch by themselves.
i don't think you can make them hatch faster
Just look for a Pokemon with flame body ability and then your eggs will hatch.
Just keep running around and soon it will hatch
It depends on the Pokemon that is inside the egg, some Pokemon need more time to hatch. But you can always use Action Replay to make eggs hatch faster.
there is no way to make them hatch faster the have to go in their own paste
No sadly, they don't. I don't exactly mean by 'hatch eggs' but if you mean make eggs in the daycare centre they don't (we'll you can't clone them.) But some can hatch out off eggs like Riolu. (Devolution of Lucario)
No, not unless there is a chick in it, and it is about to hatch.
the hen will give the eggs
You can't make the eggs hatch faster, but you can play Pokemon Crystal Version on the Nintendo 64 with Pokemon Stadium 2 which has an option to increase the gamespeed.
You will need to walk/run/bike a certain number of steps to hatch the egg.
the female keep the eggs until they hatch