These aquatic mammals are the largest members of the dolphin family, despite one of their names suggesting otherwise.
Orcas
'You have to be willing to do whatever it takes to... seize your moment.'
Ernesto de la Cruz
This spelling bee winner is Helga's older sister in 'Hey, Arnold'.
Olga
Ancient Egyptians had such regard for these animals that they would shave their eyebrows when they died.
Cats
'Hey, I know a joke! A squirrel walks up to a tree and says, "I forgot to store acorns for the winter and now I am dead." Ha! It is funny because the squirrel gets dead'
Dug
This Nickelodeon character was inspired on British biologist and documentarian, Sir David Attenborough.
Nigel Thornberry
While humans have three cones, able to perceive red, blue and green light, these furry friends only have two cones, and can only perceive blue and yellow, giving them limited colour vision.
Dogs
'Crying helps me slow down and obsess over the weight of life's problems.'
Dory
These three series were the first to debut as Nicktoons, on August 11th, 1991.
Doug, Rugrats and the Ren & Stimpy Show
These tiny animals were the first to survive being exposed to the vacuum of space.
Tardigrades
'I'm going for fearsome here, but I just don't feel it! I'm think I'm just coming off as annoying.'
Rex
These three characters were the protagonists of a Nicktoon about a school where monsters learned to frighten humans.
Oblina, Ickis, Krumm
These large mammals use low frequency sounds that are inaudible to humans, called infrasounds, to communicate across long distances.
Elephants
'Hey, conscience, am I dead?'
Dory
This dummy from 'As Told By Ginger' belongs to Ginger's mother and is inspired by a real life product.
Car Buddy Bob