Associations
It just so happens that if your partner were the one to associate with vet visits and leashed walks, and you are the one with treats and cuddles, that’s the way the choosing goes.
Emotional Bonds
The relationship between this and whether or not it’s connected to time spent together is uncertain. Observers have noted that loyalties can shift over the course of time.
Temporary Love
Ok, it’s unfair to call it temporary love, but if you feel that a lot of excitement is in the air when either you or your partner comes home, don’t mistake it for a preferential choice.
Awkward Odors
Researchers have found that sometimes dogs find certain smells off-putting. In people, this could be perspiration or a result of alcohol, smoking or other diet issues.