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30 Interesting Facts About Blue Whales

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The blue whale is a marine mammal that belongs to baleen whales. Its closest relatives are fin whales, humpback whales, and sei whales. The blue whale is the biggest animal to have ever lived on earth . It can reach a length of up to 98 ft. and weighs 200 tons. The blue whale has the largest lungs, heaviest tongue, and largest heart in the animal kingdom. Its heart rate is the slowest among mammals . ( Source ) The blue whale has five subspecies : Northern blue whale (in North Atlantic and North Pacific oceans), Antarctic (or Southern) blue whale, Indian Ocean blue whale, South Pacific Ocean blue whale, and Pygmy blue whale. The Antarctic blue whale is the largest, and the pygmy blue whale is the smallest among blue whales. Blue whales have the  smallest and narrowest flippers  relative to their size compared to other whales . Their flukes also cover the smallest area according to body length. ( Source ) Blue whales are one of the  loudest animals  on earth. Their calls can reach mor

50 Interesting Facts About Indonesia

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Indonesia is an island country in Southeast Asia. However, it also controls the western part of New Guinea, an island in Oceania. Therefore, it is also known as a transcontinental country . Indonesia is the world’s  largest island country , with around 17000 islands, including 6000 inhabited islands. It covers an area of more than 1.9 million km 2 . Java in Indonesia is the world’s most populous island. In 2010, its population was 136 million. ( Source ) Indonesia’s capital Jakarta is the world’s  second most populous urban area  after Tokyo-Yokohama in Japan. Its population is more than 33 million. Indonesia’s Grasberg Gold Mine is the world’s  second-largest gold mine . It has gold reserves of 30.2 million ounces (Moz). ( Source ) There are  121 volcanoes  in Indonesia, 3rd most in the world after the USA and Japan. However, this Southeast Asian country has the highest number of active volcanoes. ( Source ) The largest supervolcanic eruption in the last 25 million years occurred in

40 Interesting Facts About Wolves

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Wolf is the largest living member of the Canidae ( dog-like carnivores ) family. It is also known as grey or gray wolf. There are other types of wolves , along with gray wolves. These include red wolves, Ethiopian wolves, and Eastern wolves (or timber wolves).  Nearly 5% of mammals mate for life , and grey wolves are one among them. Alpha male and female wolves lead their pack. Wolves are social animals that usually form packs of 6 to 10 members. This family unit contains a male and female wolf and their offspring. These groups can sometimes have up to two dozen members. Wolves  howl to communicate  with other members of their pack or to warn other packs from entering their territory. Wolf howl is audible up to 10 miles in open areas. Wolves can use different tones while howling. It helps them to deceive their rivals by pretending to be a larger pack. Wolves can howl aggressively on the  nights of a full moon  as they can see and hear better on these nights. However, it is a miscon

50+ Interesting Facts About the Philippines

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The Philippines is an island country in Southeast Asia. It is surrounded by the Philippine Sea, South China Sea, Celebes Sea, and the Sulu Sea. The Philippines is an ethnically diverse country. The largest ethnic group is Tagalog, which comprises 25% of the population. Christianity is the main religion in the Philippines, with nearly 90% followers. Around 80% are Roman Catholic Christians. The Philippines is one of a few Christian-majority countries in Asia . It has the world’s 3 rd highest Roman Catholic population, after Brazil and Mexico. The Philippines came under Spanish rule in 1565, and they founded Manila in 1571. It was the only Southeast Asian country without any central government before the colonization of European power. Spain handed over the Philippines to the USA in 1898 after its defeat in the Battle of Manila Bay (part of the Spanish-American War) and internal rebellion.  The USA granted independence to the Philippines on July 4, 1946. It was the first country t

30 Interesting Facts About Ducks

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Ducks are among the birds known as waterfowls . Its closest relatives are geese and swans. Ducks are smaller than both geese and swans. They have shorter wings and necks and flatter beaks than their closest relatives. There are several types of ducks according to their habitat and feeding preferences. The most common ones are dabbling ducks, diving ducks, sea ducks, perching ducks, and mergansers. Ducks are present on every continent except Antarctica . The yellow-billed pintail is the only duck species occasionally seen in coastal Antarctica. ( Source ) Ducks are one of a few animals with  abstract intelligence . A study has proved that mallard ducklings can understand the abstract relationship between different shapes and colors. In contrast to other intelligent animals , they can achieve this quality without training. ( Source ) Ducks can sleep with one eye and half brain open. Unlike other animals with this feature, they have complete control and only remain semi-alert when sleep

40+ Interesting Facts About Sweden

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Sweden is one of the three countries in the Scandinavian Peninsula . It lies between Norway and Finland. Sweden has a mild climate , related to its surroundings. It is due to the influence of the warm North Atlantic current and the moderate southwesterly winds. More than 60% area in northern Sweden is mountainous with forests. The soil in the southern part of the country is fertile. Sweden has the  highest number of islands  in the world. According to estimates, this Nordic country has 221,800 islands.   ( Source ) Sweden  recycles 99%  of its domestic waste. Along with that, the country also imports and recycles more than 2 million tons of rubbish from Norway, the UK, Ireland, and other countries. ( Source ) Sweden has the  largest stealth ship  in the world. This corvette is 72m long and has a displacement of 600 tons. ( Source ) Sarek National park in northern Sweden is  Europe’s oldest national park , established in 1909. The country established a total of 9 national parks in 1909.

35+ Interesting Facts About Pigs

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Pigs, also known as swine or hog, are domesticated mammals raised for meat (pork), fat (lard), leather, and other purposes. Pigs are closely related to wild boars. Their  domestication started  around 8500 BC in the Near East. The development of European pigs happened after the integration of domestic pigs and the European wild boars by 4500 BC. ( Source ) Pigs are naturally inclined to  eat feces and garbage . It was a significant reason for the domestication of pigs. ( Source ) Replacing  human jawbones and their connecting joints is difficult due to their shape and other requirements. However, an experiment proves that pig fat can replace human fat in this process. ( Source ) The Big bill of the Poland-China breed was the  largest pig ever . It was 5 ft. tall and weighs 1,157 kg. Pygmy hog is the smallest breed where males can attain up to 10 kg of weight and just over 2 ft. in height. Both domestic and wild pigs have thick skin with adipose tissue, which protects against snake ve