[AprilPearl]

Healthy weight varies from hamster to hamster, the same as for people. For example, at 5 weeks old my Quigley was the same weight my Mushu had been at 11 weeks! However, both were a healthy weight for them. Breeder hams are usually bigger and females tend to be larger than males, but there are some very big male pet shop hams out there! If you are feeding a healthy diet and Yogi feels firm to the touch with no excess flab then he is likely fine. You could post some pictures on here if you are concerned, but 150g sounds like a fine weight for that age.