Besides roaring, tigers also make a growl, hiss, purr and chuff sound. Tigers make the churl sound when greeting other tigers. They roar during the mating (交配) season to communicate over long distances.
Tigers also use chemicals to communicate. Males and females mark the boundary of their areas by spraying a mixture of urine (尿液) and scent on trees, grass, and bushes. Tigers also put scratches on tree trunks to mark their boundaries.
A tiger's body is built for capturing and killing large prey. Tigers have powerful legs and a flexible backbone. This helps the tigers to quickly chase and catch prey over short distances. Bengals can leap 10 yards and can jump 15 feet in the air.
Wild tigers are found only in Asia.
Bengal tigers are protected, and they are the national animal of both Bangladesh and India. To help protect the tigers, the government in India had a special conservation program called project Tiger. Due to this project, the population of wild tigers in India now numbers about 3,500 which is up from the 1,200 tigers that lived there in 1970.
Tigers can live in almost any climate. They live in large hunting areas. To survive they need water, shade and food. Tigers are found in rainforests, hot, dry woods, and cold, snowy forests. Tigers also live in mangrove (经济的) swamps, marshes, and tail grasslands. In general, tigers like to be in shade. Unlike lions, they rarely go onto open plains.
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