Comparisons
Pit Bull Bite Force: How Strong Is a Pit Bull’s Bite, Really?
A dog grips a rope toy and leans back, growling happily. Its owner pulls, and the dog pulls harder. It…
The field guide
Comparisons
A dog grips a rope toy and leans back, growling happily. Its owner pulls, and the dog pulls harder. It…
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.…
Strength & bite force
A captive lioness bit a sensor with 1,594 newtons, about 163 kg of force. No one has ever measured a…