Table 1.

Randomization of stimuli presentation.

Group	Sample				Location of odor B	Number of horses
	A1	A2	A3	B
F	Fear	Fear	Fear	Joy	Left	7
					Right	6
J	Joy	Joy	Joy	Fear	Left	6
					Right	6

Of the 30 horses that participated in the test, 5 did not sniff the sample and were excluded from further analysis; this table gives information for the 25 remaining horses (see “Statistical analysis”).