Light source is different on head then on rest of body, shoes have pretty ugly looking shading.
Legs have top part of them missing outline.
Tail also has a different light source.
Head is also very flat.
Its also worth noting that it doesn't resemble a wolf even slightly.
1.: The lightsource on the head is the same as the rest of the body. Top right.
2.: The top part of the legs is covered by the shirt. He doesn't tuck his shirt into his pants.
3.: *points at last comment*
6.: And how does yours resemble a possum?
7.: Why am I still talking like this?