The liger is a hybrid offspring of a male lion (Panthera leo) and a tigress, or female tiger (Panthera tigris). The liger has parents in the same genus but of different species. The liger is distinct from the similar hybrid called the tigon, and is the largest of all known extant felines.[1][2] They enjoy swimming, which is a characteristic of tigers, and are very sociable like lions. Notably, ligers typically grow larger than either parent species, unlike tigons.[1][2][3]

In 1825, G. B. Whittaker made an engraving of liger cubs born in 1824.[3] The parents and their three liger offspring are also depicted with their trainer in a 19th-century painting in the nave style.


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Two liger cubs born in 1837 were exhibited to King William IV and to his successor Queen Victoria. On 14 December 1900 and on 31 May 1901, Carl Hagenbeck wrote to zoologist James Cossar Ewart with details and photographs of ligers born at the Hagenbeck's Tierpark in Hamburg in 1897.

In 1935, four ligers from two litters were reared in the Zoological Gardens of Bloemfontein, South Africa. Three of them, a male and two females, were still living in 1953. The male weighed 340 kg (750 lb) and stood a foot and a half (45 cm) taller than a full grown male lion at the shoulder.

In 1948, LIFE magazine pictured "Shasta," a liger conceived and born at the Hogle Zoo in Salt Lake City; its (future) parents had been rubbing noses through adjoining cage bars, and were permitted to cohabitate. The two-pound cub was "almost completely neglected by its mother, but the zoo's superintendent took it home and raised it, eventually returning it to the Zoo in a cage across from its parents' (separate) cages.[6]

Although ligers are more commonly found than tigons today, in At Home in the Zoo (1961), Gerald Iles wrote "For the record I must say that I have never seen a liger, a hybrid obtained by crossing a lion with a tigress. They seem to be even rarer than tigons."[7]

The liger has a faint tiger-like striped pattern upon a lionesque tawny background. In addition, it may inherit rosettes from the lion parent (lion cubs are rosetted and some adults retain faint markings). These markings may be black, dark brown or sandy. The background color may be correspondingly tawny, sandy or golden. In common with tigers, as an example of countershading, the underparts are pale. The specific pattern and color depend upon which subspecies the parents were and how the genes interact in the offspring.

White tigers have been crossed with lions to produce "white" (actually pale golden) ligers. In theory, white tigers could be crossed with white lions to produce white, very pale or even stripeless ligers. There are no black ligers. Very few melanistic tigers have ever been recorded, most being due to excessive markings (pseudo-melanism or abundism) rather than true melanism; no reports of black lions have ever been substantiated. As blue or Maltese tigers probably no longer exist, gray or blue ligers are exceedingly improbable. It is not impossible for a liger to be white, but it is very rare. The first known white ligers were born in December 2013 at Myrtle Beach Safari in Myrtle Beach, South Carolina to a white male lion and a white female tiger.[8]

The liger is often believed to be the largest cat in the world.[1] Males reach a total length of 3 to 3.6 m (9.8 to 11.8 ft),[9][10] which means that they rival even large male lions and tigers in length.[11] Imprinted genes may be a factor contributing to the large size of ligers.[12] These are genes that may or may not be expressed on the parent they are inherited from, and that occasionally play a role in issues of hybrid growth. For example, in some dog breed crosses, genes that are expressed only when maternally-inherited cause the young to grow larger than is typical for either parent breed. This growth is not seen in the paternal breeds, as such genes are normally "counteracted" by genes inherited from the female of the appropriate breed.[13]

Other big cat hybrids can reach similar sizes; the litigon, a rare hybrid of a male lion and a female tigon, is roughly the same size as the liger, with a male named Cubanacan (at the Alipore Zoo in India) reaching 363 kg (800 lb).[14] The extreme rarity of these second-generation hybrids may make it difficult to ascertain whether they are larger or smaller, on average, than the liger.

It is sometimes wrongly believed that ligers continue to grow throughout their lives because of hormonal issues.[15] It may be that they simply grow far more during their growing years and take longer to reach their full adult size. Further growth in shoulder height and body length is not seen in ligers over six years old, as in both lions and tigers. Male ligers also have the same levels of testosterone on average as an adult male lion, yet are azoospermic in accordance with Haldane's rule. 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.

Hercules, the largest non-obese liger, is recognised by the Guinness Book of World Records as the largest living cat on Earth, weighing 418.2 kg (922 lb).[16][17] Hercules was featured on the Today Show, Good Morning America, Anderson Cooper 360, Inside Edition, and in a Maxim article in 2005, when he was only three years old and already weighed 408.25 kg (900 lb).

Though ligers typically have a life expectancy of between 13 and 18 years, they are occasionally known to live into their 20s.[21] A ligress named Shasta was born at the Hogle Zoo in Salt Lake City on 14 May 1948 and died in 1972 at age 24.[22] Nook, a liger at a facility in Wisconsin, died in 2007, at 21 years old.[2][18] Hobbs, a male liger at the Sierra Safari Zoo in Reno, Nevada, lived to almost 15 years of age before succumbing to liver failure, and weighed 450 kg (992 lb).[23]

Panthera hybrids tend to experience a higher rate of injury and neurological disorder than non-hybrids. Though not universal, ligers and tigons may develop health issues. Organ failure issues have been reported in ligers, in addition to neurological deficits, sterility, cancer, and arthritis.[24][25][26]

The fertility of hybrid big cat females is well documented across a number of different hybrids. This is in accordance with Haldane's rule: in hybrids of animals whose sex is determined by sex chromosomes, if one of the two sexes is absent, rare or sterile, it will be the heterogametic sex. Male ligers are consequently sterile, while female ligers are not.

As with the tigon, the liger exists only in captivity. Historically, the Asiatic lion and the Bengal tiger co-occurred in some Asian countries, and there are legends of male lions mating with tigresses in the wilderness, or of ligers existing there.[3] The two species' ranges are known to overlap in India's Gir National Park, though no ligers were known to live there until the modern era.[29] The range of the Caspian tiger has overlapped with that of the lion in places such as northern Iran and eastern Anatolia.[30]

The breeding of ligers and other Panthera hybrids has come under fire from animal rights activists and organisations, who argue that the health problems experienced by these animals makes their creation immoral.[32][33] Despite these assertions of immorality, some unlicensed zoos still breed ligers for profit.[34]

A liger is the result of breeding a male lion to a tigress. A tigon is the result of breeding a male tiger to a lioness. Since lions and tigers do not exist in the same areas, this is not something that happens in the wild. It is done in captivity by disreputable carnies to produce a freak that ignorant people will pay to see. These cats suffer from many birth defects and usually die young. Because ligers are usually larger than either parent, it also puts the tigress at great risk in carrying the young and may require C-section deliveries or kill her in the process. When the public quits paying to see these unfortunate creatures, the evil people responsible for breeding them will stop this inhumane practice.

When you see ligers in the news or on TV, write the station and let the reporters know the truth about hybrids. You can send 5 letters at once to the media of your choice through our online email system at CatLaws.com

Read about the conviction of those involved in canned hunts in the US. They excuse their behavior by making the case that ligers and tigons are not protected by the Endangered Species Act. Now you know why so many of these sleazy back yard breeders are trying to produce more of them.

The following story attempts to make it sound like there could be some reason to breed lions and tigers for public amusement, but anyone who cares about animals knows that this is a despicable thing to do because the cats have to spend their lives in deprivation and confinement and are genetically so unhealthy that they usually die young. The ONLY reason anyone breeds ligers is to create a freak that simple minded people will pay to see.

Accredited zoos frown on the practice of mixing two different species and have never bred ligers, says Jane Ballentine, a spokesperson for the American Zoo and Aquarium Association, based in Silver Spring , Maryland.

Gene Set Enrichment Analysis (GSEA) is a computational method that determines whether an a priori defined set of genes shows statistically significant, concordant differences between two biological states. The original algorithm is detailed in Subramanian et al. with 'Java' implementations available through the Broad Institute (Subramanian et al. 2005 ). The 'liger' package provides a lightweight R implementation of this enrichment test on a list of values (Fan et al., 2017 ). Given a list of values, such as p-values or log-fold changes derived from differential expression analysis or other analyses comparing biological states, this package enables you to test a priori defined set of genes for enrichment to enable interpretability of highly significant or high fold-change genes. 006ab0faaa

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