Arcanine was always one of my favorite pokemon. That and vulpix/ninetails. You did a beautiful job with him. His face looks so intelligent and gentle, I just want to give him a hug. Your lineart is very well done and so clean. I especially like the thin highlights on his body. I think it helps to give him a better sense of dimension.
All the original pokemon were so great. Now there is I don't know how many. I saw a pokemon book in the store the other day and it was ash with a stampede of all of these pokemon I didn't know. It kinda made me feel sad.
What program do you use to draw/ink your pictures? Do you do any of it on paper?