Thats a puzzler. Make sure you don't move the youngun back and forth into inventory. That resets the pets back to the start. Other than that I don't know what's up. Keep count and then contact...
Anytime you're over 40 there will be a message of "max energy" below. But you're not capped at 40, energy you collect will still be added to your game. For example 1000/40.
You won't be getting the...