Dogs really do have favorite people, and here's how they decide who it will be

When my sister's dog, Junior, was on this side of the Rainbow Bridge, I was one of his favorite people. This dog would get full body wags every time I came around, and we'd spend most of the day cuddled up with each other. Now my dog, Cocolina, behaves in the same way whenever my sister comes to visit. But what goes into a dog deciding who their favorite person is? Spoiler, it's not always the person they live with. Like humans, animals have their own personalities. You might rescue a dog thinking it will be the perfect companion, only to have the furry adoptee spend every waking moment fol...