He 's crouched down , close to the ground , sniffing it cautiously . Then he lifts his nose to the air once more , turns his head either way , and inhales deeply . Then he lets out a small growl and turns to the other three while on all fours .

Available choices:
(1). The dog will hurt others .;
(2). The dog will get let go .;
(3). None of the above choices .;
(4). The dog will remain cautious .;
Q: What may happen during the incident ?
(4).