other thoughts are when you think of "love" actual love and what it means it becomes clear that snakes aren't capable of it.
Dictionary.com Definition of Love:
n.
A deep, tender, ineffable feeling of affection and solicitude toward a person, such as that arising from kinship, recognition of attractive qualities, or a sense of underlying oneness.
A feeling of intense desire and attraction toward a person with whom one is disposed to make a pair; the emotion of sex and romance.
Sexual passion.
Sexual intercourse.
A love affair.
An intense emotional attachment, as for a pet or treasured object.
A person who is the object of deep or intense affection or attraction; beloved. Often used as a term of endearment.
An expression of one's affection: Send him my love.
A strong predilection or enthusiasm: a love of language.
The object of such an enthusiasm: The outdoors is her greatest love.
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I don't think a snake can express a deep intense affection, or an emotional attachment. I believe its because a snake is made to hunt its food, live alone in the wild and generally have to survive love doesn't come into play. It doesn't have to depend on anyone (from its point of view), it doesn't need a person to keep it warm (again from the snakes view) and it doesn't have a reason to feel attachment to anything. I would think other behaviours would be evident if these things were going on. This is a good discussion though.
Marisa