Some porn tropes--e.g. knotting, going into heat, oviposition--only really work with furry/alien/supernatural characteristics. Furry fandom is one way to explore beyond the realm of what's possible in the real world.
Besides, people have been identifying with and fantasizing about being animals for as long as there have been people. It's not weird to imagine that would cross over into sex somehow.
Some porn tropes--e.g. knotting, going into heat, oviposition--only really work with furry/alien/supernatural characteristics. Furry fandom is one way to explore beyond the realm of what's possible in the real world.
Besides, people have been identifying with and fantasizing about being animals for as long as there have been people. It's not weird to imagine that would cross over into sex somehow.
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