Matt Durrant wrote:
> 
> That's hardly news. Didn't they have to clone Dolly the sheep hundreds of
> times before they got one that worked, so to speak?

The process goes something like this:  First, you need about 200 egg
donors.  The DNA of the donor creature is inserted into each egg, and
only about 40 survive that process and show signs of fertilization. 
Those that survive are placed in a female 'volunteer' (animals can't
volunteer, after all) in groups of 5 to 8, depending on the species. 
Probability says that of those females, only one will actuall get
pregnant. And of the eggs inserted only 1 will actuall become a living creature.