Because you asked for a critique I'm going against my norm and adding criticisms as well as bravos. Just keep in mind it is a personal response.
I love the overall mood. Colors are superb; they reflect the tension, the coldness of the night, the lack of safety. Movement is wonderful...I can feel the chase is on. The beast's face is fantastic; this is a fearsome creature of the night. Supportive images are spot on; the trees, skyline, and grass beneath all convey that eerie night feeling in the forest.
However, to me, something is off with the wings; they seem tacked on rather than part of the animal, and the same for the tail. I can see where you are going but I think you need to rethink position. Also I would get rid of the talons, at the very least the one on the tail it seems forced to me. Also, the face on the zebras seemed bland rather than desperate.
But overall as I said, I love it. I hope you don't mind my giving my honest opinion.
yes, I have to thank you for the critiques, you are right, I got your point. I tried to search some reference for the zebras's head, but I could not find something good. About the tail, I tried to illustrate this manticore in its hunting time, I thought that it has to pick up the victims with its paws and after that, with its tail, and it's why i put the tail in that position.
Ah...I do like the tail in the downward position, but perhaps you need to make more clear how the tail connects to the trunk? Because the image blurs it is how to tell. You are an extremely good artist, otherwise I simply wouldn't have said a word. Night Shield is gorgeous.