Sometimes in nature, you gotta wear a disguise so you can survive. Looks like nature likes to dress up for Halloween, too. 

 

1. Bee Fly

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via Hindu_Wardrobe

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via wiki

 

2. Leaf-Veined Slug

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via wilsays

3. Ladybird (Ladybug) Mimic Spider 

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via dailymail

4. Green Leaf Bug

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via wiki

5. Orchid Mantis

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via ripleys

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via biologypop