How Long is a mom ferret pregnant?

The Black-footed Ferret has a normal gestation of 41 to 43 days, depending on many factors, including the number of kits she is carrying. The average sized litter is between 3 and 4, but a litter can range from 1 to 7 kits, and litters have been seen with as many as 10 kits, this is rare though. The kits are born blind, with thin white fur and completely dependent on the mother, who will raise them on her own. For more details, please see the sites listed below.
Like a domesticated ferret, they are pregnant for 42 days (41-43)