what is that dog doing in the end of naruto?

What is that dog doing in the end of Naruto?

well naruto got him on his key(ring or whatever u can see it in ep 20 i think) and something other but thats a spiler so i wont say.

Oh yeah...forgot about that http://www.gotwoot.net/forum/html/emoticons/tongue.gif


And if you go from the first time they used the new ending the dog was further and it also got closer every episode.