Do dogs know what humans know? A study into pet dogs' (Canis familiaris) ability to attribute knowledge to an unfamiliar person.

There was a statistical trend for dogs choosing the Both cup above chance (37.12 ± 9.87%; t-test, df = 21, t = 1.802, p = 0.086; Fig. 2 ), while the Subject-only cup was chosen above chance (43.94 ± 16.10%; t = 3.091, p = 0.006) and the Empty cup below chance (18.94 ± 11.26%; t=−5.993, p < 0.001; Fig. 2 ).

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