Wow I don't know how you did that, just the mention of any maths confuses me xD You're right though and I spent ages worrying that Fudge was underweight when I saw all these hams weighing 200-300g and she's just under 130g but she's a pet shop ham and looking at her and what she eats, that's healthy for her.
I think this is a great thread though, well done you for working all of that out