Hello, I'm an expert in entomology, the study of insects. When it comes to dragonflies, they are generally not harmful to humans. Dragonflies are beneficial insects that play a crucial role in controlling the population of mosquitoes and other small insects by preying on them. They are agile fliers and are known for their striking appearance with large wings relative to their body size.

However, like any other creature, if a dragonfly feels threatened or is accidentally grabbed, it might use its wings or mouthparts to defend itself, which could potentially cause a minor scratch or irritation. But this is not common, and dragonflies do not have a venomous bite or sting that would be harmful to humans.

Dragonflies are also delicate creatures, and it's important to handle them with care if you ever come across one. Their wings are thin and can be easily damaged.

In summary, dragonflies do not hurt people under normal circumstances, but it's always best to observe and appreciate them from a respectful distance.

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YES, if you catch one and hold it in your hand and carelessly allow its mandibles to reach your skin, it will bite as hard as it can in self defense. Very few dragonflies can even break the skin, but some of the big ones can do so and may induce an ��ouch��.read more >>