AnAge entry for Panthera leo

Classification (HAGRID: 02476)
Taxonomy	Kingdom: Animalia Phylum: Chordata Class: Mammalia (Taxon entry) Order: Carnivora Family: Felidae Genus: Panthera
Species	Panthera leo
Common name	Lion
Lifespan, ageing, and relevant traits
Maximum longevity	27 years (captivity)
Source	ref. 671
Sample size	large
Data quality	high
Observations	Some older publications list lions as capable of living up to 30 years [0514], which is based on anecdotal reports and probably incorrect. Record longevity in captivity belongs to a wild born male that died at Cologne Zoo at about 27 years of age. A hybrid between a leopard and a lion lived for 24 years and a hybrid between a lion and tiger lived for 24.2 years [0671].
Life history traits (averages)
Female sexual maturity	1,095 days
Male sexual maturity	1,095 days
Gestation	109 days
Weaning	216 days
Litter size	3 (viviparous)
Litters per year	1
Inter-litter interval	649 days
Weight at birth	1,300 g
Weight at weaning	8,480 g
Adult weight	175,000 g
Postnatal growth rate	0.0035 days^-1 (from Gompertz function)
Maximum longevity residual	87 %
Metabolism
Typical body temperature	311ºK or 37.9ºC or 100.2ºF
Basal metabolic rate	94.5800 W
Body mass	98000.0 g
Metabolic rate per body mass	0.000965 W/g
References
[0671] Richard Weigl (2005), Longevity of Mammals in Captivity; from the Living Collections of the World [0036] Savage et al. (2004), The predominance of quarter-power scaling in biology [0420] White and Seymour (2003), Mammalian basal metabolic rate is proportional to body mass2/3, PubMed [0610] Ernest (2003), Life history characteristics of placental non-volant mammals [0434] Ronald Nowak (1999), Walker's Mammals of the World [0162] Packer et al. (1998), Reproductive cessation in female mammals, PubMed [0455] Virginia Hayssen et al. (1993), Asdell's Patterns of Mammalian Reproduction: A Compendium of Species-Specific Data [0680] Wootton (1987), The effects of body mass, phylogeny, habitat, and trophic level on mammalian age at first reproduction [0731] Zullinger et al. (1984), Fitting sigmoid equations to mammalian growth curves [0514] Theodor Haltenorth and Helmut Diller (1977), A Field Guide to the Mammals of Africa including Madagascar
External resources
Integrated Taxonomic Information System	ITIS 183803
Animal Diversity Web	ADW account
Encyclopedia of Life	Search EOL
Genome Project	Search NCBI
Entrez	Search all databases Entrez Taxonomy search
Ageing literature	Search Google Scholar Search PubMed Search Scirus
Images	Google Image search
Internet	Search Google

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