hiya doggiesarethebest!

From my experience with Murph and Oz, one thing I was
going to mention was that size may matter, if you wanted
the new dog to be a possible playmate for Drake.

Oz and Murph do play together. They'll chase each other
and play tug, but Oz has to curtail his play considerably.
For the most part, he does a real good job of playing gentle
with Murph. If he does get overly excited and forgets himself,
then Murph gives him a reminder growl and snap.

I think Oz would like to play harder, but he really can't with
Murph without hurting him, so you may want to consider that
with Drake. If I ever get another dog, it'll be at least medium
sized.

Par...