Sebastian and I went back to the vet last night for another blood test. The medication he's on isn't really doing anything for him. Depending on the results we will try some other medications. He's lost another almost 100 grams, down to 954 from 1450. He's thin as a rail. I got up to check on him at 1 am and there he was, chowing down on his ferret kibble - hungry boy. It was very good to see him eating.