Red Squirrel (Sciurus vulgaris), tree-living rodent native to Europe and Asia. In Britain its range and numbers have diminished of the past 50 years because of competition from the Grey Squirrel (S. carolinensis) introduced from North America. From British Quadrupeds, W MacGillivray, (Edinburgh, 1828), one of the volumes in William Jardine's Naturalist's Library series. Hand-coloured engraving.