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A separate study found American lions were more sexually dimorphic than modern lions in terms of size: American lion males being 1.4 times larger than females, compared to modern male lions being 1.26 times larger. [9] In 2008, the American lion was estimated to weigh up to 420 kg (930 lb).
Following list contains size (weight and length) measurements for wild adult males of each species: Rank Common name ... Lion: Panthera leo: 160–195 [8] [9] (352-429)
The heaviest land mammal is the African bush elephant, which has a weight of up to 10.1 t (11.1 short tons).It measures 10–13 ft at the shoulder and consumes around 230 kg (500 lb) of vegetation a day.
Size of Paraceratherium (dark grey) compared to a human and other rhinos (though one study suggests Palaeoloxodon namadicus may have been a larger land mammal). The blue whale is the largest mammal of all time, with the longest known specimen being 33 m (108.3 ft) long and the heaviest weighted specimen being 190 tonnes.
In 1987, it was found that most lions in North American zoos were hybrids between African and Asiatic lions. [221] Breeding programs need to note origins of the participating animals to avoid cross-breeding different subspecies and thus reducing their conservation value. [ 222 ]
The heaviest known pantherine felids are the Ngangdong tiger (Panthera tigris soloensis), which has been estimated to have weighed up to 486 kg (1,071 lb), [179] the extinct leonine Panthera fossilis, which has been estimated to have maximum weight of 400–500 kg (880–1,100 lb), [185] the American lion (Panthera atrox), weighing up to 363 kg ...
There seems to be a lots of debate on the weights of Smilodon populator, American lion and other extinct felines. Misconceptions include average weights of 500 or 550 kg for both. I have compared the sizes of the two Smilodons, American Lion and extant felids. I had to do some guesswork to connect the missing links.
In addition, female ligers may also attain great size, weighing approximately 320 kg (705 lb) and reaching 3.05 m (10 ft) long on average, and are often fertile. In contrast, pumapards (hybrids between pumas and leopards) tend to exhibit dwarfism. Ligers are about the same size as the prehistoric Smilodon populator and American lion.