Answer: SITSUP

AnswerCrossword Clue
SITSUPAssumes better chair posture
SITSUPShows interest
SITSUPStarts to get out of bed
SITSUPShows sudden interest
SITSUP"... and takes notice."
SITSUPExhibits surprise: Colloq.
SITSUPAssumes an alert position.
SITSUPShows interest.
SITSUPPerforms a canine feat.
SITSUPShows surprise.
SITSUPBecomes attentive
SITSUPBecomes interested
SITSUPTakes notice
SITSUPStarts to rise from bed
SITSUPRequests a dog treat, maybe
SITSUPPays attention