According to a new study, they whistle. Researchers slid a small camera through horses' noses to film what happened inside while they whinnied and made another common horse sound, the softer, subtler ...
A few small rodents like rats and mice whistle like this, but horses are the first known large mammal to have a knack for it.
Cold weather drives rodents to seek warmth in engine bays, where they chew wiring and build nests from leaves, sticks and insulation.
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