Found
the anime, i think :?: (For further information about this manga/anime, go to this
page).
This page mentions that Pata appears in the volume 44 of the manga version and following
link contains the explanation of references and jokes, scroll down to volume 44 and you will find X on it (it also mentions Toshi, Yoshiki, and hide)
However this Patalliro is not a dog, nor does he likes to do nothing. Quite the contrary, he is a genius but hyperactive kid. I found no resemblaces between this Patalliro and Pata, except the face is a little bit similar ? (you who have read the manga/watched the anime should understand why *explodes*)
Maybe someone with japanese language knowledge can help ?