found it in my backyard's driveway (there's no poisonous lizards here, in Portugal, btw); it doesn't seem to match any known species listed here: https://en.m.wikipedia.org/wiki/List_of_reptiles_of_Portugal#Lizards
it's about some 15/20 cm long, and looks like it got run over by a car; soon after it was gone (another car probably run over it again and it must've got stuck to its tires, my guess).