ok so i have finally tamed my first animal, (took ages to realise i could lead my main target away from the other cattle to avoid their secondary agro... re: follows me after first taming.. so making it easy to take to my palisade and tame without fear of a mugger/murderer)
my main question is a simple one,, i hope,, what do the red and brown fill lines mean in animal info? i was guessing red was health and brown hunger, but my first tamed one seems to be losing red bar.

secondly, does the tree in my paddock stop the beast eating? and should i plow the land? i read somewhere that a beast will eat grass if it cannot get to the trough, i am concerned since i haven't seen it feed from the Q30 feed, and no feed has gone from the trough in the last 4 hours.. i know it is suppposed to eat 4.5 units of food, but is this a bit at a time, or once every 24 hours after taming..