@obduliojacinto

And if YOUR criterion is: do we let them in the house? Then it seems, other domesticated animals have done that, but not only that, they have slept with us, in bed, even the cow (holy cow!)!

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If I needed a bed warmer over the winter, I'd take a cow or pig over a dog any day, given their body mass.

And as for the bond that's formed between man and dog, I know the dog was certainly feeling it when it was swimming through my digestive tract a few years ago. Unfortunately, I wouldn't go so far as to call that love or unique. So you are in no way speaking for me (though I do consider myself a sample of homo sapiens sapiens). I will have my lawyers send you a cease and desist letter for bandying about the word "man" so carelessly. Please change that to "all men save one".