Answer: bulldog

AnswerCrossword Clue
BULLDOG

Square-jawed pooch

BULLDOG

Critter on a Mack truck

BULLDOG

Stubborn person

BULLDOG
Well-known mascot.
BULLDOG
Wrestle a steer
BULLDOGEli's pet?
BULLDOGDetective Drummond
BULLDOGMuscular canine
BULLDOGGeorgia mascot
BULLDOGSymbol of tenacity