Exploring
While exploring you use energy as you move but its always random, from 1 to 3(? I'm not sure if there is a higher number). I believe this mechanic is fairly useless as the amount of energy expended per turn is never the same. What I mean is running into poop can take two energy one time and three the next. This is frustrating and seems a bit unfair. What I suggest are set amounts of energy expended depending on the encounter! Below are my suggestions.

Normal "aka" Nothing: 2 energy (If a lion doesn't have any encounters that still limits them to 5 steps per 15 minutes)
Encountering Enemy: 0 energy (you will use energy depending if you win or loose.. why loose energy on the encounter?)
Resting: 0 energy - energy boost only (This one is self explanatory, when you gain energy through a nap you shouldn't be expending any)

Battling
When you choose to battle there are three outcomes, win, defeat or flee. I understand that a battle is a much bigger interaction and therefor should use more energy but the current energy consumption seems odd. Below are my suggestions.

Winning: 5 energy (you just kicked their butt, you should be rewarded)
Loosing: 10 energy (you just got your butt kicked, you clearly used a lot of energy)
Fleeing in Battle: 5 energy (getting your butt kicked? escape with a lower energy loss) If a chance to fail fleeing is implemented it will stop energy consumption abuse

Leveling
I've read a lot of suggestions about how levels are not valued much.. this suggestion doesn't have much to do with that. I believe once a King has clawed his way to a higher level he should be rewarded. I suggest with each level gain a King should be given a full energy bar!

Thank you, Criticism is welcomed!
BTW I looked through a few pages to see if such things have been suggested already. I was not able to find any similar suggestions. However if I missed one and this has been suggested and rejected in the past.. feel free to throw these rocks at me! *Points to pile of suspiciously soft "rocks"*