Table 1.

Individual characteristics (sex, age, breed) of the subjects, their pre-experimental experience, the percentages of Knower choices and the first-trial performances in the three tests

Dog	Sex	Age	Breed	Experiencea	GP			GA			GLA
					Mean	First trial	NVTb	Mean	First trial	NVT	Mean	First trial	NVT
Clio	F	1.5	Mix	TS, II	0.58	K	24	0.88	K	24	0.83	K	24
Lola	F	3	Mix Shepherd	P, TS, II, Ps	0.61	K	23	0.62	G	21	0.63	K	24
Freyja	F	2.5	Czechoslovakian Wolfdog		0.52	G	23	0.88	K	24	0.58	G	24
Louise	F	9	Mix		0.63	G	24	0.78	K	23	0.63	K	24
Hybie	F	7	Labrador Retriever	ET, TS, II, Ps	0.64	K	22	0.91	G	22	0.54	K	24
Tuukka	F	2	Mix	P, ET, TS, II, Ps	0.57	G	23	0.71	K	24	0.67	K	24
Haly	F	5	Jack Russell Terrier		0.50	K	24	0.67	K	24	0.71	K	24
Izy	F	4	Podenco		0.41	K	22	0.71	K	24	0.65	K	23
Mowgli	M	3	Mix	II	0.58	K	24	0.67	G	24	0.67	K	24
Benji	M	6	Mix	P, ET, II, Ps	0.50	K	24	0.65	K	23	0.63	K	24
Koda	M	4.5	Mix German Shepherd		0.42	G	24	0.87	G	23	0.58	K	24
Cameron	M	3.5	Border Collie	ET, II, Ps	0.79	K	24	0.83	–	23	0.58	K	24
Bucksi	M	7	Papillon		0.27	G	22	0.65	K	21	0.71	K	24
Patrasch	M	8.5	Mix Spitz	TS	0.63	G	24	0.54	K	24	0.43	K	23
Charlie	M	7	Bearded Collie	P, II, Ps	0.67	K	24	0.67	K	24	0.58	G	24
Cookie	M	4	Bearded Collie	P, II	0.70	K	23	0.54	K	24	0.46	G	24

Bold typeface indicates performance significantly different from chance

GP Guesser Present, GA Guesser Absent, GLA Guesser Looking Away

^aExperience: TS Touch screen, II Inhibition control; Inequity aversion: P Pointing, Ps Pro-social behaviour

^bNVT, number of valid trials (trials the dog chose a pointed cup); K, dog chose the Knower; G, dog chose the Guesser; – dog did not chose