| MAMMALS |
| Largest and Heaviest | Blue Whale
Average length 30.5 m
Largest ever recorded 33.58 m
Pregnant female may weigh 203 tones |
| Smallest Land Mammal | Kitti's hog-nosed Bat (Found in Thailand)2
Wing span 16 cm
weight 1.75 to 2 g |
Smallest Marine Mammal
| Probably Heaviside's dolphin (Found in South Atlantic)
Length 1.22 m
Weight 41 kg |
| Rarest Mammal Rarest Mammal | Aspecies of tenrec from Madagascar is only known from a single specimen. |
| Fastest Mammal | Cheetah (found in Africa, Middle East, W. Asia) can run at 100 kph over short distances.
Pronhorn antelope (Found in USA)
Can run at 60 kph over long distances. |
| Slowest Mammal | Three-toedsloth (found in South America) covers about 5 m a minute in trees, and only 2 m aminute on the ground. |
Highest Mammal
| Yak (found in Tibet and China) climbs to 6000 m to feed. |
| REPTILES |
| Largest and Heaviest | Estuarine Crocodile (found in Asia, Australia)
Average length (male) up to 4.3 m
Longest ever recorded 8.23 m |
| Largest Lizard | Komodo dragon (found in Indonesian Island)
length up to 3 m |
| largest Turtle | Pacific leatherback turtle
Average length (male) up to 2.13 m
weight up to 363 kg. |
| Fastest Amphibian (On Land) | Six-linedracerunner (found in USA)
can run at 29 kph |
| Fastest Amphibian (In Water) | (In Water) Pacific Leatherback turtlecan swim at 35 kph |
| Longest Snake | Reticulated Python (found in India and South-east Asia)
Average length more than 6 m
Longest ever recorded 10 m |
| Most Poisonous Snake | Sea Snake (found in North West Australia) |
| Most Poisonous Land Snake | Fierce Snake(found in Australia) has most toxic venom. |
| AMPHIBIANS |
| Largest Amphibian | Chinese gaintsalamander
Average length 1m
Longest ever recorded 1.52 m
Weight 11 to 13 kg. |
| Largest Frog | Goliath Frog (found in Africa)
Length of body 33.5 cm |
| Largest Toad | Probably marinetoad (found in South America)
Length 22.9 cm. |
| Largest Newt | Ribbed newt (found in Africa)
Length upto 40 cm
Weight 450 g |
| Highest Toad | Common toad
One found in Himalayas at 8000 m |
| Most Poisonous | Kokoiarrow-poison frog (found in South America)
A tiny amount of toxin is enough to kill a man. |
| Smallest Newt | Striped newt (found in USA)
length 5.1 cm |
| BIRDS |
| Largest Bird (Flightless) | North African Ostrich
Height (male) 2.74 m
Weight 156.5 kg
eggs up to 20 cm long |
| Largest Wing Span | Wandering albatross (found in Southern Oceans)
Average length (male) 3.15 m
Largest ever recorded 3.6 m |
| Smallest Bird | Helena's humming bird (found in Cuba)
Average length (male) 5.8 cm
(head and body 1.5 cm)
Weight 2 g
Egg 1.14 cm long |
| Rarest Bird | Mauritius Kestrel (found in Mauritius)
About 5 are thought to remain. |
| Fastest Bird | Spine-tailed swift (found in Russia and Himalayas)
flies at 171 kph |
| Longest Flight | Arctic tern
May cover 40,000 km a year migrating from Arctic to Antarctic and back. |
| Fastest Under Water | Gentoo Penguin swims at 36 kph |
| Largest Nest | Bald eagles
one was 2.9 m wide and 6 m deep. |
| FISHES |
| Largest Fish (Plankton-eating) | Whale Shark
Largest ever recorded 18.5 m long. |
| Largest Fish (Meat Eating) | Great white shark (the man-eater)
Average length up to 4.57 m. |
| Heaviest Bony Fish | Ocean sunfish is the heaviest
largest ever recorded 2.28 tonnes. |
| Longest Bony Fish | Russian sturgeon or Beluga
Length up to 8 m |
| Fastest Fish | Probably Sailfish
fastest ever recorded 109 kph |
| Most Poisonous Fish | Stonefish (foundin Indian and Pacific Oceans)
Poison carried in spines can cause a person's death within a few hours. |
| Most Electric | Electric eel (found in South America)
can produce 400 to 500 volts. |
| INSECTS |
| Largest Insect | Goliath beetle (found in Africa)
Weight (male) 100g |
| Longest Insect | Tropical stick insect
Length up to 33 cm |
| Largest locust Swarn | A Swarn of desert locusts that crossed the Red Sea in 1889.
Swarn estimated to contain 250,000,000 insects
weighing about 500,000 tonnes and covering 5,000 sq. km |
| Largest Butterfly | Queen Alexandra bird wing (found in Guinea)
Wing span 28 cm, weight 5 g |
| Most Dangerous Ant | Black bulldog ant (found in Australia and Tasmaina)
One bite can kill a man. |
| Fastest Wing Beat | A tiny midge can beat its wings 1000 times a second. |
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