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Caterpillars and their look a likes

I am new to this site, so I apoligize in advance if my etiquette is bad.
I have a caterpillar in my garden. It "looks" like a monarch butterfly caterpillar, except it is on my dill plant. I heard monarch caterpillars feed strictly on milkweed. Can anyone tell me what this caterpillar might be ???

Where to start looking
I don't know what kind of caterpillar you have, but you'll probably find some lookalikes if you click this link and then click on the most similar pictures to get the creature's name.

Larvae of black swallowtails (eastern and central US) and anise swallowtails (western US) eat dill. As they get older, they become striped, something like monarch larvae, but the colors are different.

The Black Swallowtail
feeds on dill, among other plants. Take a look at the photos here, and see what you think.

Others may have additional suggestions.

You are welcome to post questions like this here; however, the surest method of finding out what bug you've got is to post a photo to ID Request.

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