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Why Are Mules Sterile?
Video

Why Are Mules Sterile?

Why Are Mules Sterile?
Video

Why Are Mules Sterile?

Horse plus donkey — it seems like an unlikely combination. I mean, they're different species! And yet, when they get together, they can produce a mule or the lesser-known hinny. Either way, those offspring usually can't become parents themselves.


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