 <translate> A dog can open its mouth even when the dog isn't angry. A dog can open its mouth near a smaller dog for any reason and not just if it intends to growl at the smaller dog.
Therefore, the answer is it is not possible to tell. <yor> Ajá lè ṣí ẹnu rẹ̀ bí kò tilẹ̀ bínú. Ìdí yòówù kí ajá kan fi ṣí ẹnu rẹ̀ sí i nítòsí ajá tó kéré sí i, kì í kàn-án ṣe torí pé ó fẹ́ kí ajá tó kéré sí i bú sẹ́nu. Nítorí náà, ìdáhùn náà ni pé kò ṣeé ṣe láti sọ. 