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Not only mammals (hence, this post).

Read about it, mammals will yawn when other non-mammals yawn.

Well, the android is roughly mimicking a mammal. But more to that point, I've seen snakes yawn, and I then yawned. Reptiles generally seem to yawn and I'd bet they yawn when they see mammals yawn too.

> I've seen snakes yawn

if a see a snake (yawning or otherwise) i'll definitely not yawn.

puking, screaming or running would be more likely.

Aww, snakes are cute though. You should think about spending some time around some docile snakes to challenge your aversion. Even through a glass tank wall, so you can feel rationally safe.

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