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Dolphin

Dolphins are sea mammals. They are members of Delphinidae family. They have to breathe air or they will die. Dolphins can hold their breath for six minutes.

Dolphins have smooth skin. Only baby dolphins are born with a few bristly hairs on their snouts. Their hair soon fall out. They have big tail and the fin on the top of their backs keep the dolphin from rolling over. The female dolphins have a thick layer of fat under their skin to keep the warm when they dive very deep. The dolphin's front fins are called flippers. They use them to turn left and right. Dolphins grow from 2 to 3 meters long and weight up to 75 kilograms.

Dolphins hunt together in a group. A group of dolphins is called a pod. They eat fish, shrimps, and small squids. They live in salt water oceans. When dolphins scar or see a ship close by they go near and follow it from distance, dolphins can jump out of the water and do somer saults. Sometimes they invent their own tricks and stunts after watching other dolphins perform.

Dolphins are very friendly to people and have never harmed anyone. They are very playful animals.

Guava

Guava is a plant in the myrtle family (Myrtaceae) genus Psidium. It is native to Mexico and Central America, Northern South America, parts of the Caribbean and some parts of North Africa and also some parts of India. The guava tree is not big. It is about 33 feet with spreading branches. The bark is smooth with green or reddish brown color. The plant branches are close to the ground. Its young twigs are soft. It has hard dark elliptic leaves. It is about 2-6 inches long and 1 - 2 inches wide. The flowers are white, with five petals and numerous stamens.

Guava is cultivated in many tropical and sub tropical countries for its edible fruit. Guava fruit, usually 2 to 4 inches long, is round or oval depending on the species. Varying between species, the skin can be any thickness, it is usually green when unripe, but becomes yellow or maroon when ripe. The flesh of Guava fruit is sweet or sour. The color of the flesh may be white, pink, yellow, or red, with the seeds in the central part of the flesh. The seeds are numerous but small. In some good varieties, they are edible. Actual seed counts have ranged from 112 to 535. Guava fruit is rich with vitamins A and C, omega-3 and omega-6, gatty acids and high levels of dietary fibre.

  

 Kangaroo

A kangaroo is an animal found only in Australia, although it has a smaller relative, called a wallaby, which lives on the Australian island of Tasmania and also in New Guinea.

Kangaroos eat grass and plants. They have short front legs, but very long, and very strong back legs and a tail. These are used for sitting up and for jumping. Kangaroos have been known to make forward jumps of over eight metres, and leap across fences more than three metres high. They can also run at speeds of over 45 kilometres per hour.

The largest kangaroos are the Great Grey Kangaroo and the Red Kangaroo. Adult grow to a length of 1.60 metres and weigh over 90 kilos.

Kangaroos are marsupials. This means that the female kangaroo has an external pouch on the front of her body. A baby kangaroo is very tiny when it is born, and it crawls at once into this pouch where it spends its first five months of life.

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