the.com/red squirrel

means A small, tufted-eared, reddish-furred squirrel native to Britain and much of Eurasia, now rare in the UK after competition from the introduced grey squirrel.

from Straightforward English compound — 'red' for the rust-orange coat, 'squirrel' tracing back through Old French 'esquirel' to Latin 'sciurus,' itself borrowed from Greek 'skiouros,' literally 'shadow-tail' (skia 'shadow' + oura 'tail'), describing how the animal seems to sit in the shade of its own bushy tail. The species name has nothing to do with Britain specifically; it only became 'native' in contrast once the American grey squirrel arrived in the 19th century and the label 'red' turned from mere description into a badge of embattled identity.