Table 1. Characteristics of the studied animals.

Subspecies	Name	Sex	Age at first testing (months)
Wolf	Aragorn	Male	24
Wolf	Shima	Female	24
Wolf	Kaspar	Male	24
Wolf	Tatonga	Female	11
Wolf	Nanuk	Male	11
Wolf	Geronimo	Male	11
Wolf	Yukon	Female	11
Wolf	Cherokee	Male	11
Wolf	Apache	Male	11
Dog	Meru	Male	43
Dog	Nuru	Male	26
Dog	Zuri	Female	26
Dog	Nia	Female	25
Dog	Layla	Female	24
Dog	Rafiki	Male	12
Dog	Alika	Female	12
Dog	Maisha	Male	11
Dog	Kilio	Male	11