I tried to construct a model of Spike as best I could.  
I was going for a strong, healthy, manly looking body paired with a cute face/head to contrast.
 
I could use some input about this, even if you’re going to be BRUTAL about it, I’ll take it.  
I don’t have a lot of experience making or designing appealing male characters so if you’re going to tell me what you think, DON’T HOLD BACK. I can take it.
 
Also some tips on how to make this character look more appealing when it comes to size, anatomy and shape are welcome too.
 
Would a skinny build be better? More Muscles? Should he be short to match the cuteness? Let me know.