The body mass and length of red foxes varies as foxes in Europe and northern latitudes are larger than those in North America and southern latitudes.
The body mass and length of red foxes varies by region and by latitude.
According to Bergmann’s rule, red foxes are larger in the north. Those in southern deserts and in North America are smaller than those in European populations.
• Image | © Ray Hennessy, Some Rights Reserved, Unsplash
• Sources | (Fox, 2007; MacDonald & Reynolds, 2005)
