Answer:

buddy

Answer	Crossword Clue
BUDDY	White House pooch, once
BUDDY	Sidekick
BUDDY	Chum

BUDDY	Pal
BUDDY	One to hang with
BUDDY	Morey's role on "The Dick Van Dyke Show"
BUDDY	Hackett or Holly
BUDDY	Comedian Hackett
BUDDY	Dear old pal.
BUDDY	Pal.
BUDDY	Ebsen or Hackett

BUDDY	Comrade
BUDDY	One of the Baers
BUDDY	Clinton Lab
BUDDY	Lab in 1997 headlines