Irena Crilly found this monster in her garden.
This is the first tomato hornworm caterpillar Mrs Crilly has seen and she has learned it can grow up to 10cm.
They are loathed by gardeners as they attack tomato plants, eggplant, bell peppers and potatoes.
Mrs Crilly says a natural enemy of the caterpillar are wasps who feed on them and are beneficial to your garden.
This species eventually turns into the five spotted hawk moth.