Records & rankings
How big is a Kodiak bear? Height and weight of males and females
Male Kodiak bears weigh 272–635 kg (600–1,400 lb) and the biggest reach 680 kg (1,500 lb). Females weigh 136–318 kg.…
The field guide
Records & rankings
Male Kodiak bears weigh 272–635 kg (600–1,400 lb) and the biggest reach 680 kg (1,500 lb). Females weigh 136–318 kg.…
Size & weight
Male grizzlies in the lower 48 US states usually weigh 180–270 kg (400–600 lb) and females 110–160 kg (250–350 lb).…
Adaptations
The 3 key adaptations of an arctic fox, sorted into structural, behavioural and physiological, with a labelled diagram, myths, a…
Speed
Tigers sprint at about 49–65 km/h (30–40 mph) in short bursts: faster than any human, about as fast as lions,…
Adaptations
Lions survive by teamwork. Prides stalk big prey together, manes signal health to rivals and mates, and desert lions get…
Comparisons
Polar bears are bigger than grizzlies on average: males weigh 350–590 kg against 180–270 kg. Only the biggest coastal Alaskan…
Adaptations
Stripes that look green to deer, night vision about six times better than ours, 10 cm claws and strong swimming:…
Adaptations
The 3 key adaptations of a cheetah, sorted into structural, behavioural and physiological, with a labelled diagram, myths, a quiz…
Size & weight
A low rumble crosses the valley floor. A herd of bison is on the move, and each animal in it…
Size & weight
Early morning in a northern marsh. Something dark lifts its head out of the water, and keeps lifting. By the…
Comparisons
The biggest blue whales reach about 33 m (108 ft) and 150 tonnes, and females are bigger than males. Sizes…
Comparisons
Chimp muscle makes about 1.35 times the force and power of human muscle of the same size (O'Neill et al.…