.Put several starving athletes in a downed plane, with their dead teamates and see how far “loyalty” goes.
Put several starving pioneers in the middle of the frozen mountains with their deceased loved ones and see how far “love” goes.
Not that I’m not willing to possibly concede that animals don’t love us, I just don’t think that those 'tests" prove it since they can be said of human on human (who DO love each other) reaction too.
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Try to focus for a few brief seconds here.
Dogs != People
therefore (still with me?)
Dog Behavior != Human Behavior
Not a difficult concept. You might as well compare an earthworm to a dolphin.
While my example may not have been the best, it doesn’t negate a century of animal behavior studies. A dog’s decision to eat a human has nothing to do with emotion. A human decision to eat another human is an agonizing one that normally results in severe emotional distress and years of guilt.
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Right, however as “proof” you were using examples in which humans and dogs would behave in similar manners. I agree that the human after effects would be different than a dogs. But in such a situation, even a dog would be hesitant to break a taboo against eating a master, though of course it’s survival needs would outweigh it’s hesitation of course. Just as our survival needs would outweigh our taboo against cannibalism (not for everyone of course, if I remember, there were those in the downed Andes disaster that refused, and chose instead to die), but a lot of people.
The truth is that unless we have some way of being inside a dog, or other pet’s mind, we really have no idea what they are really “thinking” or feeling, if at all.
I don’t at all think that dogs experience love, or any emotions on a level approaching that of humans. But I don’t think that then equals that all of their actions are driven by instinct only. In my opinion only, I think that in their limiited dog and cat ways, that they do feel affection for their human companions. But again, that is ONLY my opinion.
My own dog acts in a very interesting way. And I’ve read of her breed, that they are equated with having the intelligence level of a toddler. Strangely, is survival is a factor, I’d wonder about her abilities, for in a perfect world, as she has now, she’s not all that interested in food, if play is in the offing.
She’ll happily give up her food to any dog, but they’d better NOT think about her toys. And she’s quite aware of which ones are hers, and which are the other dogs. All it takes is a “play with your OWN chewman!” for her to stop trying to take over all toys. 
I’m sure there’s some survival or instinctual reason behind that, territorial likely, that some scientist would be happy to outline for me, but what it could be I can’t think right now.