Possible Title:
Beware the DogTheme: two-word phrases beginning with GR, respectively, and the second words R
Good Ones:Dog warning {and theme} GRR
By the Way:Seems to be more than the usual crosswordese (words seldom seen except in Xwords) for one day:
UDON, OAST, IRAE, EDO, RUR
RATING:

Three grins = Loved it; Two grins = Enjoyed it; One grin = A bit bland for my taste; One teardrop = Not much fun