• Elephant is the largest animal that lives on land. It is also the second tallest member of the animal kingdom and the giraffe is the tallest. There are two kinds of elephants African elephants and Indian elephants (Asian Elephants). African Elephants are larger than Indian elephants. An elephant pregnancy is the longest of any animals.

  • Octopus is a sea animal. An octopus has three hearts. The largest species, the giant octopus of the Pacific Ocean, weights about 50 kg.

  • Squid is a marine mollusk (animal with a soft, boneless body). The giant squids, which measure 18 meters is length, are the world’s largest invertebrates (animals without a backbone).

  •  Koala is a marsupial animal found in Australis.

  • Bovine Spongiform Encephalopathy (BSE) is a disease that affects cattle. BSE attacks the central nervous system of cow it is also called mad cow disease.
  •   The female American Opossum gives birth to more than twenty babies.

    • The Cheetah is the fastest land animal.

    • The Orangutan found in Borneo and Sumatra, is the heaviest tree-dweller in the world.

    • Imago is the fully developed insect which emerges from the pupa at the and of third stage of meta-morphosis in an insect life.

    • The scorpion is not an insect. It belongs to a class of animals called arachnids.

    • Cow’s milk is about 87 percent water and 13 percent nutrients. These are 1.Carbohydrates 2.Fats 3. Minerals 4. Proteins 5. Vitamins.

    • Owl  are popularly known as  “night watchman”

    • Animals store their food as glycogen, while the plants as starch.

    • Cattle fish is a mollusk (boneless animal).

    • The fastest snake is the Black mamba of Africa.

    • Manotremata- These are the egg- lying animals-e.g.: Duckbill, Platypus and the Spiny ant eater. 

    •  Marsupials –These mammals have pouches. E.g Kangaroos and Kola bears.

    • Amoebas have only one nucleus.

    • Life cycle of a butterfly has four stages –egg, larva, pupa and adult.

    • Amphibians are cold –blooded vertebrates and it has a three chambered heart.

    • Salmonella- A bacterium that is the cause of a type of food poisoning.

    • The animals with a backbone are called Vertebrates The animals which have no backbone or bony skeleton are called invertebrates.

    • There are some organisms where both the gametes exist in the same individual. These organisms are called hermaphrodites. Earthworms, leeches and flowers in most plants are such organisms.

    • Indian shark, electric ray, carp, flying fish, sea horse, climbing perch, lung fish and sting ray have two chambered heart.

    • Frog, toad, chameleon, flying lizard and wall lizard have three chambered heart.

    • Pigeon, peafowl, sparrow and ostrich have four chambered heart.

    • Goliath Frogs are the largest frogs in the world.

    • Kit’s hog-nosed bat is one of the smallest mammals and is found in Thailand.

    • Dragon flies are the fastest insects in the world. They can reach speeds of over 50 km/hr.

    • The male emperor moth has the most powerful sense of smell in nature. It can smell a female about 11 km away

    • The Australian Emu lays eggs that change color When they are laid , they are dull green, but within a few days they turn black and glossy.