What's That Bug? does not endorse extermination

New London, NH USA
Can you tell me what these caterpillars are? I think one is a swallowtail but don’t know the other one. Thank You

Your caterpillar is a Monarch, not a swallowtail. It is on a milkweed pod, the larval food plant.

What's That Bug? does not endorse extermination

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