Tiger Swallowtail Caterpillar

We’re stumped!!!
Hello from British Columbia !!! We were out in our backyard today and found this odd creature …… we figure it is in the caterpillar family but couldn’t find out it’s name ??? Could you help us out ??? Thanks
Stumped on Vancouver Island

Dear Stumped,
This is a Western Tiger Swallowtail Caterpillar, Papilio rutulus. They feed on the leaves of willows, aspens and other trees.

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