What is the world's largest fish?
The harmless whale shark holds the title of largest fish, with the record being a 59 footer captured in Thailand in 1919.

The blue whale, the worlds largest animal at 110 feet according to guiness world records eat krill, which are shrimp-like crustaceans only about an inch-and-a-half long.
Pick on somebody your own size? Not whales! An adult whale might slaughter 40 million, or 4-6 tons of these little creatures in one day!!
Amazingly, the krill population persists, but you have to assume this perpetual atrocity affects the krills ability to develop a stable society.
Reference: Animal Planet
More facts about animals.
The harmless whale shark holds the title of largest fish, with the record being a 59 footer captured in Thailand in 1919.
Prairie dogs, those little pups popping in and out of holes on vacant lots and rural rangeland, are talking up a storm. They have different "words" for tall human in yellow shirt, short human in green shirt, coyote, deer, red-tailed hawk and many other creatures.
There is an ant in Brazil that has a gland which causes the ant to explode like a bomb, spraying a sticky toxic
goo on everybody nearby. Now that's some hard core biology!