Pseudoeurycea robertsi is a terrestrial salamander living in pine-fir forests at elevations of above sea level. Specimens have been found under rocks, logs, and loose bark of fallen logs and stumps. It is relatively common but has declined in the past and has a small area of occurrence. Moreover, there are threats to its habitat from tourism, forestry, agricultural and livestock activities, and urbanisation: formerly a national park, Nevado de Toluca is now an Área de protección de Flora y Fauna, conferring a weaker conservation status.