Oh wow! the size difference!! lol
Reminds me of my Staffy, 47lbs of solid muscle & my 6lb Yorkie Heidi (passed 16 may this year) they got along fine too...i used to get some raised eyebrows while out walking them though...I remember one guy stopping me and asking if they both lived in the same house..when i said yes he was looking from one to the other in amazement! lol