Its a little too centred for my liking but im struggling to see how you could crop this better, I love the lion on the left hand side as it does look bored to tears just lying there. Great image
I like this picture because of the texture and colors of the rocks against the colors of the lions. It looks very nice. And it relates to the idea of being bored because the one lion is bored because the other is sleeping.
This is a Pretty good shot, but sort of boring (no pun intended.) Maybe a lillte something in the forgournd would help (Some leading lines, maybe something to frame the lions.....)