Hmm yeah, now I see it. I did those rear legs quite longer than they should be. I'll try that solution, thanks a lot
EDIT: I thought I might show you how it's coming along after a few changes:
I resized and repositioned the legs, and I also made the head a bit smaller. It's impressive how many mistakes you get to notice after doing the initial sketch I think there are still a few things to look at and reshape, but I think I'm getting closer to satisfaction now. Thanks ^^