![]() ![]() Rhino horns grow as much as three inches a year, and have been known to grow up to five. All five remaining rhino species worldwide are considered threatened, according to the conservation group Save the Rhino.ĬNN’s Christina Zdanowicz contributed to this report. In mammals, albinism occurs when an individual inherits one or more mutated genes from both parents that interfere with the body’s production of melanin, the main pigment that determines the color. White rhinos have two horns, the foremost more prominent than the other. The western black rhino was declared extinct years ago as a result of poaching. With only two left worldwide, there’s a race against time to try to sustain the northern white rhino. CNN Hopes that mankind can save the northern white rhino from extinction appeared more remote than ever this week, after scientists announced they will retire one of the last two living. Experts say the rhino horn is becoming more lucrative than drugs. Habitat: grassy plains, rainforests and swamps. Rhino wallow By wallowing in mud puddles, they help to create natural waterholes and keep existing water holes open. Rhinos are targeted by poachers, fueled by the belief in Asia that their horns cure various ailments. Rhinos are ‘keystone species’ mega-herbivores that help shape entire ecosystems by: Geo-forming fundamentally reshaping the land around them over time. The harvested eggs were airlifted from Kenya to Italy, where scientists at the Avantea laboratory fertilized the eggs in vitro with the sperm from the deceased males. Sperm from both males was cryogenically frozen with the hope that technology would advance enough to use it in reproduction. Sudan died of natural causes in March last year and another male died in 2014. Both male northern white rhinos died, leaving the fate of the subspecies on the female rhinos. ![]() The Ol Pejeta Conservancy acquired the northern white rhinos – two males and two females – in 2009 from a zoo in the Czech Republic. Weyerhaeuser / WWF Learn more about the five different species of rhino. Najin (left) and Fatu are the last two northern white rhinos on the planet. Habitats Tropical and subtropical grasslands, savannahs and shrublands, tropical moist forests, deserts and shrublands Frederick J. ![]()
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