I tried three this year, and told my self from the start it was a "practice" year. 2 of my 3 produced a total of 9 babies. It was plenty of work trying to keep track of there sheds and locks and follicles and seemed like plenty of work at the time. Probably could have handled more but think I did just enough to be completely stoked about this coming year and learned enough that I shouldn't have to be on the phone to my 3 favorite breeders begging for some reassurance that everything is going okay.