General Knowledge: Animals, Business & Sports

Black Widow spiders are notorious for sexual cannibalism, where the female often kills and consumes the male after mating. This behavior gives them their name and is a defining characteristic of the species, though it doesn't happen in every mating encounter.

Mammoths were large, hairy elephant relatives that lived during the Ice Age. They were adapted to cold climates with thick fur and curved tusks. The name 'mammoth' (spelled 'Mamoth' in the option, which is a typo) clearly refers to this extinct creature.

The Komodo dragon is the largest living lizard species, native to Indonesian islands. They can grow up to 3 meters (10 feet) in length and weigh around 70 kg (150 lbs). Neither iguanas, crocodiles, nor alligators are classified as lizards.

The anaconda is widely considered the world's biggest snake by mass/weight. While reticulated pythons can be longer, anacondas (particularly green anacondas) are much bulkier and heavier. The black mamba and king cobra are venomous but not in the size category of constrictors like anacondas and pythons.

Red-bellied piranhas are freshwater fish native to the Amazon River basin. While their reputation for attacking humans is exaggerated in reality, they are indeed the Amazon fish species most famous for being dangerous in large numbers when food is scarce. Sharks and sting rays are marine animals not found in the Amazon's freshwater ecosystem.

The Dingo is a wild dog species native to Australia, scientifically known as Canis lupus dingo. They are found in forests and other habitats across Australia. Bingo is a fictional dog, Rottweiler is a German breed, and Australian Shepherd was developed in the United States.

T20 International cricket began in 2005, with the first T20I played between Australia and New Zealand on February 17, 2005, at Auckland. This was the inaugural T20 International match, marking the format's official entry into international cricket.

While Ostrich is the fastest running bird, the Peregrine Falcon is the fastest flying bird, reaching speeds over 320 km/h (200 mph) in its hunting dive (stoop). Eagles, owls, and seagulls are fast but don't match the Peregrine's diving speed record.

The Hummingbird is indeed the smallest species of bird, with the Bee Hummingbird being the smallest at just 2-2.5 inches long and weighing less than 2 grams. Sparrows are small but larger than hummingbirds, while 'Running bird' and 'Summerbird' are not recognized bird species.

The most dismissals (wicketkeeper catches and stumpings) in an over in T20 International is 5, achieved by wicketkeepers like Kamran Akmal and others. This involves taking 5 wickets through catches/stumpings in a single over. Options of 2, 3, 4 dismissals are not the record.

Brett Lee took the first hat-trick in T20 International cricket, achieving this feat against Bangladesh in 2007 at the T20 World Cup. A hat-trick means taking three wickets in three consecutive deliveries. Jacob Oram, Dirk Nannes, Dale Steyn, and Yuvraj Singh are notable T20 players but didn't achieve this first.

Warren Buffett has been the CEO of Berkshire Hathaway since 1970, building it into one of the world's largest conglomerates. His legendary investment philosophy and long-term leadership are well-known. The other options are prominent CEOs but of different companies - Chenault (American Express), Ergen (Dish Network), Fink (BlackRock).

Steve Jobs (Steven Jobs) was Apple's CEO during his tenure, though this is dated - Tim Cook has been CEO since 2011. For the context when this question was written, Jobs would be the correct answer as Apple's iconic co-founder and CEO. The other options are CEOs of other major companies.