Insect and Spider Identification: Caterpillar Identification Request: Mediterranean coast of Spain, 0 by bending_sickle

bending_sickle wrote:
Hi! Any help identifying the following would be greatly appreciated: the caterpillar is about 6 cm long, has a black tail (single prong, about 0.5 cm), is light grey-ish with black bands, and has an orange head. It was found in an area with pines and brush, but was not found on a plant (it was rescued from an outdoor cattery). The geographical location is the northern Mediterranean coast of Spain.