▁de pression . ▁Instead ▁these ▁animals ▁somehow ▁managed ▁to ▁find ▁a ▁way ▁to ▁handle ▁the ▁un ple asant ▁situation ▁in ▁spite ▁of ▁their ▁past ▁experience . ▁The ▁corresponding ▁characteristic ▁in ▁humans ▁has ▁been ▁found ▁to ▁correlate ▁highly ▁with ▁an ▁explan atory ▁style ▁and ▁optim istic ▁attitude ▁that ▁views ▁the ▁situation ▁as ▁other ▁than ▁personal , ▁per vas ive , ▁or ▁permanent . ▁ ▁Since ▁these ▁studies , ▁sympt oms ▁analog ous ▁to ▁clin ical ▁de pression , ▁neu ros is , ▁and ▁other ▁psych ological ▁conditions ▁have ▁also ▁been ▁accepted ▁as ▁being ▁within ▁the ▁scope ▁of ▁em otion ▁in ▁domestic ▁dogs . ▁The ▁post ures ▁of ▁dogs ▁may ▁indicate ▁their ▁emot ional ▁state . ▁In ▁some ▁instances , ▁the ▁recognition ▁of ▁specific ▁post ures ▁and ▁behav iors ▁can ▁be ▁learned . ▁ ▁Psych ology ▁research ▁has ▁shown ▁that ▁when ▁humans ▁gaz e ▁at ▁the ▁face ▁of ▁another ▁human , ▁the ▁gaz e ▁is ▁not ▁symmet rical ; ▁the ▁gaz e ▁instinct ively ▁moves ▁to ▁the ▁right ▁side ▁of ▁the ▁face ▁to ▁obtain ▁information ▁about ▁their ▁emot ions ▁and ▁state . ▁ ▁Research ▁at ▁the ▁University ▁of ▁Lincoln ▁shows ▁that ▁dogs ▁share ▁this ▁instinct ▁when ▁meeting ▁a ▁human , ▁and ▁only ▁when ▁meeting ▁a ▁human ▁( i . e . ▁not ▁other ▁animals ▁or ▁other ▁dogs ). ▁They ▁are ▁the ▁only ▁non - pr imate ▁species ▁known ▁to ▁share ▁this ▁instinct . ▁ ▁The ▁existence ▁and ▁nature ▁of ▁person ality ▁tra its ▁in ▁dogs ▁have ▁been ▁studied ▁( 1 5 , 3 2 9