Answer: intruder

AnswerCrossword Clue
INTRUDER

Target of a guard dog's growls

INTRUDER

Uninvited visitor

INTRUDER

Buttinsky

INTRUDER
Evoker of guard dog growls
INTRUDER
"... in the Dust" (William Faulkner novel)
INTRUDEREvil Otto, in the video game Berzerk
INTRUDERInterloper.
INTRUDERFaulkner's "... in the Dust"
INTRUDERUnwelcome visitor
INTRUDERAlarm triggerer