Plants and animals commonly found around Sofia include clover, oak trees, hornbeam trees, Scots pine trees, lapwings, voles, hares, hedgehogs, tortoises, and red foxes. Clover is a small herbaceous plant, oaks can reach heights of 30 meters and produce acorns, and hornbeams typically grow to 20 meters. Lapwings are migratory wading birds, voles have many litters per year, and hares can run up to 72 kph. Hedgehogs have protective spines and tortoises can live over 150 years. Red foxes are omnivores with varied diets.