Willow was born approx beginning of August.
When we weighed her on Nov 3, she was 134g (still had a meal in her system.) We weighed her last night (8 days after the first weigh and approx 3.5 months old,) after a shed and massive pee with a teeeeeeeeny poop and she was 144g. Her rat pups are the width or smaller than her belly and range 24g to 26g. So, she is getting between 10% and 20% of her body weight, once a week.
Is gaining 100g in a week normal? How fast is a safe and healthy rate for them to gain? Since she's our first baby, we don't know. Our adult we got as an adult and she's on a maintenance/slow gain schedule.