Okay, I'l give you some critique.
First of all, the paws. You draw them with three toes, but canines have four toes as well as a dewclaw. (Which is like a smaller two near the ankle)
http://en.wikipedia.org/wiki/Pawhttp://en.wikipedia.org/wiki/File:Paw_and_pads.jpgHind legs are better than most I've seen on this site, but could use some work anatomy-wise also. This can be used as a good reference.
http://www.dragoart.com/tuts/pics/13/24 ... step-3.jpgForelegs...the 'ankle' is equivilant to a humans wrist (As Cat said in a previous topic) and is a little too high in the left leg, so it almost looks like a knee. Also, the leg on the right is placed too close to the front of the body, too far in front of the left one. It should be moved back a bit.
The neck...I'm sorry but you need to study canine anatomy. You've made it the same length as the body, and like the previous poster said it's way too thick.
The body: It needs to be longer, and again like the previous poster said the dog lacks shoulders...Also, the base of the tail is too thin. And the head should always be
smaller than the shoulders. The weight is good.
Comments: I think you have an appealing style, but you really need to study canine anatomy.