My ACD's breeder is placing her #1 "stud" male who is the father of my boy. I know the dog sired about 4 of her very first ACD litters. I had emailed her and asked why she is placing him and she said because the gene pool for ACD's being so small that she needs to make room for other prospects. She only keeps a small quantity of dogs about 7 bitches and 3 studs and has 1 or 2 litters a year. She does all the health testing and shows her dogs. So is that wrong to place and make room for others