(WSVN) - If you happen to find something that looks like a walnut on your Christmas tree, you may want to cut it off and take it outside.
According to Erie County, Ohio, that mass is actually a cluster of hundreds of praying mantis eggs.
Officials shared a photo showing a mass, saying they can contain between 100 and 100 eggs.
“Don’t bring them inside. They will hatch and starve!” the post read.
Officials recommend taking the mass outside.
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