Squirrel (Sciurus vulgaris) on tree trunk, Canton of Graub?nden, Switzerland, Europe

alertness alert animals animal attention attentiveness attentive canton of graub?nden daylight daytime day eurasian red squirrels eurasian red squirrel fauna full body lengths full body length full body full length graub?nden grisons mammalian mammalia mammals mammal nature nobody outdoors outside plants plant red squirrel rodentia rodents rodent sciuridae sciurus vulgaris side views side view sideview squirrels squirrel switzerland trees tree trunks tree trunk tree watchful wild animals wild animal wildlife