Answer: scooby

AnswerCrossword Clue
SCOOBY

Shaggy's pal

SCOOBY

... Doo (cartoon canine)

SCOOBY

...-Doo (Shaggy's canine pal)

SCOOBY
Kid-vid dog, for short
SCOOBY
... Doo (cartoon dog)
SCOOBY-- -Doo
SCOOBY.... Doo