I agree with what has been said already, additionally I'd like to elaborate on Krut's post; The pose the creature is in looks weird because the way the legs are positioned is not a good way to support the weight of the thing. You'd expect the front legs to be more straight and to be directly under the torso to properly support that most massive part of the body. The same goes for the back legs, they are so far behind that it looks impossible for them to carry any weight.
I think it might help to use a reference at least for the pose, and try to think about where the creature's mass lies and how he can support it and how they weight "flows" to the ground through its legs.