Wildlife Conservation Society (2015). "Tiger dad: Rare family portrait of Amur tigers the first-ever to include an adult male". ScienceDaily. Young female tigers establish their first territories close to their mother's. The overlap between the female and her mother's territory reduces with time. Males, however, migrate further than their female counterparts and set out at a younger age to mark out their own area. A young male acquires territory either by seeking out an area devoid of other male tigers, or by living as a transient in another male's territory until he is older and strong enough to challenge the resident male. Young males seeking to establish themselves thereby comprise the highest mortality rate (30–35% per year) amongst adult tigers. [91] Gee, E. P. (1959). "Albinism and Partial Albinism in Tigers". The Journal of the Bombay Natural History Society. 56: 581–587.

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Sunquist, M. E. & Sunquist, F. (2002). "Tiger Panthera tigris". Wild Cats of the World. Chicago: University of Chicago Press. p.356. ISBN 978-0-226-77999-7. Schnitzler, A.; Hermann, L. (2019). "Chronological distribution of the tiger Panthera tigris and the Asiatic lion Panthera leo persica in their common range in Asia". Mammal Review. 49 (4): 340–353. doi: 10.1111/mam.12166. S2CID 202040786. Robinson, R. (1969). "The white tigers of Rewa and gene homology in the Felidae". Genetica. 40 (1): 198–200. doi: 10.1007/BF01787350. PMID 5806538. S2CID 40514283. van Uhm, D.P. (2016). The Illegal Wildlife Trade: Inside the World of Poachers, Smugglers and Traders (Studies of Organized Crime). New York: Springer. Tiger cubs develop this innate behavior in the early stages of their life, as this becomes quite prominent after 8 to 10 months amongst the siblings. And as they grow old, they start avoiding each other and explore the realms of their mother’s territory, till they part ways to find their niche.

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a b Karanth, K. U. & Sunquist, M. E. (2000). "Behavioural correlates of predation by tiger ( Panthera tigris), leopard ( Panthera pardus) and dhole ( Cuon alpinus) in Nagarahole, India". Journal of Zoology. 250 (2): 255–265. doi: 10.1111/j.1469-7998.2000.tb01076.x. Allen, W. L.; Cuthill, I. C.; Scott-Samuel, N. E.; Baddeley, R. (2010). "Why the leopard got its spots: relating pattern development to ecology in felids". Proceedings of the Royal Society B. 278 (1710): 1373–1380. doi: 10.1098/rspb.2010.1734. PMC 3061134. PMID 20961899. The Tiger Species Survival Plan has condemned the breeding of white tigers, alleging they are of mixed ancestry and of unknown lineage. The genes responsible for white colouration are represented by 0.001% of the population. The disproportionate growth in numbers of white tigers points to inbreeding among homozygous recessive individuals. This would lead to inbreeding depression and loss of genetic variability. [71] Fennell, J. G.; Talas, L.; Baddeley, R. J.; Cuthill, I. C. & Scott-Samuel, N. E. (2019). "Optimizing colour for camouflage and visibility using deep learning: the effects of the environment and the observer's visual system". Journal of the Royal Society Interface. 16 (154): 20190183. doi: 10.1098/rsif.2019.0183. PMC 6544896. PMID 31138092. Results of a phylogeographic study indicate that all living tigers had a common ancestor 108,000 to 72,000 years ago. [25] The potential tiger range during the late Pleistocene and Holocene was predicted applying ecological niche modelling based on more than 500 tiger locality records combined with bioclimatic data. The resulting model shows a contiguous tiger range at the Last Glacial Maximum, indicating gene flow between tiger populations in mainland Asia. The Caspian tiger population was likely connected to the Bengal tiger population through corridors below elevations of 4,000m (13,000ft) in the Hindu Kush. The tiger populations on the Sunda Islands and mainland Asia were possibly separated during interglacial periods. [44]

Daya Somasundaram (11 February 2014) Scarred Communities: Psychosocial Impact of Man-made and Natural Disasters on Sri Lankan Society, SAGE Publications India, p. 73. Humans have a layer of dark pigment cells behind the retina which absorbs extra light, whereas tigers and other nocturnal animals have a layer of reflective tissuebehind the retina called tapetum lucidum, which provides a second opportunity for the eye to catch the light, thus improving their night vision manifolds. 6. Tigers Locate each other with their Sense of smell They can drink up to 15-20 gallons of water and are excellent swimmers. 5. A Tiger’s Night Vision is 5-6 times better than humans Caspian tiger (Panthera tigris virgata): In the 1970s, the Caspian tiger—also known as the Hyrcanian tiger or Turan tiger—went extinct.