Thirteen countries that are home to the world's dwindling population of wild tigers have agreed to establish an intelligence-sharing network.
A census found 2,226 tigers in India last year compared with 1,706 in 2010, officials in New Delhi announced.
With the Washington, D.C. area getting its first snowfall, the Smithsonian Zoo had to shut down, giving the animals their own private play day.
Police and fire officials are searching the area and an area of woodland had been roped off, local authorities say.
A lack of information about how many endangered cats live in the wild is hampering efforts, the conservation group WWF said.
The Buenos Aires Zoo recently presented white Bengal tiger triplets, just three months old, to the viewing public for the first time.
Many unlikely bonds have formed between animals that normally have nothing to do with each other.
Wildlife attacks have been on the rise in some parts of the world.
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