A lime green caterpillar that has a horn on its abdomen, they have many names like the manducca or the tomato hornworm.
They eat... A LOT! They are caterpillars so they must gather fuel for their cocoon stage. They crawl around the enclosure and nibble on things.
LOTS OF TOMATOES, TOMATO PLANTS, CATERPILLAR FEED OR TOBACCO PLANTS. THESE CATERPILLARS EAT A LOT!!!!!