Fig. 14

Response time of domestic cats to single compounds. A Response time, shown as seconds per hour each compound was available, per compound. Note the large range and uneven distribution of the data for actinidine. Each compound was available for at least 2 days; 5 h on the first day and 12 h on the subsequent test day. Negative controls (fabric with evaporated diethyl ether) were always tested alongside the single compounds. B Response time to single compounds, grouped by their chemical structure, shown per cat. Type I and II lactones were available for 34 and 120.5 h, respectively. Actinidine was tested for 53 h on 5 days and dihydroactinidiolide was available for the cats for a total of 17 h (2 days). C Duration of head rubbing and rolling of 12 domestic cats in response to iridoids. The data plotted here was obtained from the supplementary online material recently published by Uenoyama et al. [20]. The authors did not analyze or discuss these data in their article. The name of the only cat responding to actinidine in the study of Uenoyama et al. coincidentally is also cat A and is not the same cat as cat A in our study. To avoid confusion, we renamed this cat UA