Thank you both for the information.
I read somewhere else that if the pups are not removed from the Mother, they would die (Although the consensus appears to be that's not the case, just reading that made me scared if I decided not to remove them).
Being new to this, I just wanted to be sure I wasn't going to kill someone off somehow!
I'll have to prepare for the removal of the pup(s) when that time comes.
Planto