From Head To Tail With a Grin

Large Yellow Underwing Noctua pronuba larva

This happy caterpillar will grow up into a noctuid moth one day. Apparently the larvae are rarely seen, feeding on various herbaceous and woody plants during the night and remaining concealed on the food plant during the day.

Large Yellow Underwing (Noctua pronuba). Rear garden, Staffordshire, England. April 2017.