Underwater
In the skies
Reptilians
Mammals
100
A plant underwater
Plankton 
100
Most eaten bird
Chicken
100
Fastest snake
Black mamba 
100
Fastest Mammal
Cheetah 
200
colorful habitats for small fish
Coral reefs
200
Fastest animal
Peregrine falcon
200
Reptile that can change colour
Chameleon
200
Beaver X Duck
Platypus 
300
2 types of sharks
Great white shark, Lemon shark, Blue shark, Mako Shark, Tiger shark, cookie cutter shark. Any of those are fine
300
Biggest Bird
Ostrich
300
Most poisonous snake
Inland Taipan 
300
Biggest Land mammal
African bush elephant
400
3 types of whales
Humpback whale, Sperm Whale, Blue whale
400
Biggest flying bird
The Wandering Albatross
400
3 types of crocodilian
Alligator, Crocodile, Gharial
400
Smallest animal in the world
Bumble bee bat 
500
A type of dolphin mistaked for a whale
500
Most Poisonous Bird
Pitohui bird
500
Animal that can run on water
Green basilisk lizard 
500
Largest Land Mammal In Histroy
Giant rhino (Paraceratherium)