what is the average weight of a red fox
Red fox Red foxes are the largest species of the genus Vulpes.[37] However, relative to dimensions, red foxes are much lighter than similarly sized dogs of the genus Canis. Their limb bones, for example, weigh 30 percent less per unit area of bone than expected for similarly sized dogs.[38] They display significant individual, sexual, age and geographical variation in size. On average, adults measure 35–50 cm (14–20 in) high at the shoulder and 45–90 cm (18–35 in) in body length with tails measuring 30–55.5 cm (11.8–21.9 in). The ears measure 7.7–12.5 cm (3–5 in) and the hind feet 12–18.5 cm (5–7 in). Weights range from 2.2–14 kg (5–31 lb), with vixens typically weighing 15–20% less than males.[39][40] Adult red foxes have skulls measuring 129–167 mm (5.1–6.6 in), while those of vixens measure 128–159 mm (5.0–6.3 in).[6] The forefoot print measures 60 mm (2.4 in) in length and 45 mm (1.8 in) in width, while the hind foot print measures 55 mm (2.2 in) long and 38 mm (1.5 in) wide. They trot at a speed of 6–13 km/h (4–8 mph), and have a maximum running speed of 50 km/h (30 mph). They have a stride of 25–35 cm (9.8–13.8 in) when walking at a normal pace.[38]:36 North American red foxes are generally lightly built, with comparatively long bodies for their mass and have a high degree of sexual dimorphism. British red foxes are heavily built, but short, while continental European red foxes are closer to the general average among red fox populations.[41] The largest red fox on record in Great Britain was a 17.2 kg (38 lb), 1.4-metre (4 ft 7 in) long male, killed in Aberdeenshire, Scotland, in early 2012.[42]
Kodiak bear Physiologically, the Kodiak bear is very similar to the other brown bear subspecies, such as the mainland grizzly bear (Ursus arctos horribilis) and the now-extinct California grizzly bear (U. a. californicus†), with the main difference being in size. While there is generally much variation in size between brown bears in different areas, most usually weigh between 115 and 360 kg (254 and 794 lb).[4] The Kodiak bear, on the other hand, commonly reaches sizes of 300 to 600 kg (660 to 1,320 lb), and has even been known to exceed weights of 680 kg (1,500 lb).[2] Despite this large variation in size, the diet and lifestyle of the Kodiak bear does not differ greatly from that of other brown bears.