sciurus vulgaris - adult red squirrel on the background of the bark of an old oak tree, ukraine

red squirrel sciurus vulgaris squirrels redsquirrel animal wildlife nature forest tree oak woodland mammal rodent fauna wild ukraine natural ecology closeup cute fluffy fur tail arboreal climbing trunk branch acorn feeding sitting curious wildanimal biodiversity environment autumn woodlandcreature foraging park ecosystem camouflage treedweller funny