is 50 grams a safe size to wean the rats from their mother? I usually wean the entire litter around 3-4 weeks of age but i lost track of age on some litters and I'm not sure what weight would be good because 50 grams does kind of seem small but some feeder sites ive seen have their weaned rats listed at 30-45 grams but it still seems small and they are still feeding off their mothers.. thanks for any help!