#hornworm

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Hornworm

Cascade Wolverine plush, Brought on eBay 30th of June 2025

They can certainly be destructive! But that's because caterpillars are designed to be eating machines. Gotta get very fat and happy before pupating into adults.

Tobacco hornworms have a special place in my heart since I raised several generations from egg to moth.

Tobacco hornworms are the larval stage of the Carolina sphinx moth, which is relatively large and very pretty!

Lorge. Photos by cassie169, nanofishology, and muir

They remind me a lot of death's head moths, which are some of my favorite species, and which tragically are not available to raise in the US.

In typical sphinx fashion, they feed from flowers and look like hummingbirds when flying, though this species is nocturnal so you likely won't see them flying around in the daytime.

Photo by kim_fleming

In the wild the caterpillars are green because of the yellow plant pigments they eat, but when you raise them in captivity on an artificial diet, they are bright blue, which is EXCELLENT.

Photos by sambiology and via bigappleherp

The caterpillars can make cute clicking noises to scare away predators. Adults can squeak! Or squirt you with a defensive fluid.

Idk if anyone else will think this is cute but their poop looks like little grenades:

Photo via southeasternoutdoors

Once the caterpillars are fat and happy enough, they burrow into the ground to pupate.

They may be destructive in gardens, but captive raised caterpillars are used in biomedical science labs for a whole bunch of different things (including neurobiology!) and of course they are hugely popular in the reptile pet trade as feeders.