Der er ikke foretaget fertilitetsundersøgelser, men hos endnu ikke kønsmodne hanhunde er der konstateret reversibel aspermatogenese (28- dages undersøgelse) samt testisdegeneration (91- dages undersøgelse).
Fertility studies have not been conducted; however, in sexually immature male dogs, reversible aspermatogenesis (28-day study) and testicular degeneration (91-day study) were seen.