I think the problem is that a lot of us (the players) are interpreting a full fed bar as meaning "well fed" whereas Arthur intended it to mean overly fed or overly stuffed.
I think it's pretty clear from his post above that a half full fed bar is normal for the majority of the day, with greater than that being normal for just after a meal. If the bar is totally full, you've just made them completely gorge themselves.
I have to admit, going straight from the first version of the game to the 0.05 update, this was the biggest shocker for me. But as soon as I saw Arthur's reply here, I felt awful for my lil peeps and stopped stuffing them immediately. I'm having a lot more fun now that I'm not so stressed about "starving" them and see the "fed" bar as and indicator of "stomach fullness" rather than how "well fed" they are.
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