Thats fantastic, though a little strange with numbering. Usually when people do the number thing its intended to be a general look. However in your iteration they have a lot more personality to them. Would be fun to read a comic about how he go the scar or how he came upon the youngling.

On another note Growlithe looks like cleaner and sharper then ol Arcanine. Not sure if its because of the smaller critter or if maybe Arcanine wasn't as detailed. Still a 5 easily, but there's a definate difference in the two. (Fantastic pixel work though)

I really like it! Your style nails it perfectly *faves*. :)