This ancient worm hunts by firing sticky slime jets from its head like a cannon

Velvet worms, a lineage largely unchanged for hundreds of millions of years, catch prey by shooting two jets of sticky slime up to 30 body-lengths from glands near their mouth, entangling insects before closing in to feed. Despite looking like caterpillars, they're more closely related to arthropods and are considered a kind of living fossil. Some are even born already pregnant with the next generation, giving birth to live young.

— Species account, Onychophora — Phylum Onychophora, velvet worms