Why Do Cats Hiss?
An angry cat can be intimidating. Your usually cool cat suddenly crouches, opens his mouth halfway, draws back his upper lip and bares his teeth in a terrifying grimace. And then he expels his breath in a strong hiss. It's enough to deter anything – or anyone.
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Animals are innocent. They don't ravage the Earth.
They don't hate or plot the annihilation of another species.
They don't take more than they need of resources.
They don't jeopardize their own survival."
- Jim Willis