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It may seem that animals get angry because a bull charges at a matador, a cat hisses when you step on its tail and a dog growls at the mailman. But anger requires a mental component that scientists do not believe animals possess. The reactions that animals have that may seem like anger are most likely expressions of fear.
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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.