Snail

শামুকের শরীরে রয়েছে প্রাকৃতিক জলশোধন ব্যবস্থা (ফিল্টার)। এরা ময়লাযুক্ত পানি পান করে। ময়লাগুলো খাদ্য হিসেবে রেখে যে পানিটা বাইরে ছাড়ে তা বিশুদ্ধ। যে ক্ষেতে শামুক থাকে, সেই ক্ষেতের উর্বরতা শক্তি বাড়ে। বেশি ফসল ফলে। এভাবে এরা কৃষকের অগোচরে বন্ধুর ভূমিকা পালন করে।

শামুক ও এর ডিম ইঁদুরের প্রিয় খাবার এবং অল্পতে ক্ষুধা নিবারণ করে। যে ক্ষেতে প্রচুর শামুক পাওয়া যায়, সেই ক্ষেতের ফসলও কম নষ্ট হয়। কই, শোল, শিং ও কার্পজাতীয় দেশি মাছগুলো শামুক ও শামুকের ডিম খেয়ে বেঁচে থাকে। ফলে শামুক

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Elephant: The Giant Mammal in the World

They’re enormous and intelligent, strong and sociable. Humans have been impressed by elephants for centuries, simply because they are so big—a male African elephant can weigh up to 7.5 tons (6.8 metric tons)! They also amaze us with their long and flexible noses, large and flapping ears, and loose, wrinkly skin. There are many stories about elephants—you’ve probably heard of Horton, Babar, and Dumbo. Elephants are one of the best-known animals in the world.

Scientific Classification:

Class: Mammalia (Mammals)

Order: Proboscidea

Family: Elephantidae

Genera: Loxodonta (African elephant) and Elephas (Asian elephant)

Species: africana and maximus

Subspecies: Loxodonta africana africana (African bush elephant)

Subspecies: Loxodonta africana cyclotis (African forest elephant)

Subspecies: Elephas maximus indicus (Indian elephant)

Subspecies: Elephas maximus maximus (Ceylon elephant)

Subspecies: Elephas maximus sumatranus (Sumatran elephant)

Quick Facts:

Life span: Late 30s to more than 50 in the wild and in zoos

Gestation: 20 to 22 months

Number of young at birth: 1

Age of

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Antelope

The word antelope has been used to describe a wide variety of horned mammals in the Family species within the Bovidae family that are known as goat-antelope! For the purposes of this fact sheet, we’ll focus on some of the species in the Antilopinae subfamily, animals commonly called antelope as well as those such as impalas, gazelles, and gnu or wildebeest. Be sure to see Goats & Sheep, Oryx, and Nile Lechwe to read about other Antilopinae subfamily members.

Scientific Classifiacation:

Class: Mammalia (Mammals)

Order: Artiodactyla

Family: Bovidae

Subfamily: Antilopinae

Genus and species: 43 genera and 239 species; however,

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Cassowary

Scientific Classification

Class: Aves (Birds)

Order: Struthioniformes

Family: Casuariidae

Genus: Casuarius

Species: casuarius (southern or double-wattled cassowary)

Species: unappendiculatus (northern or single-wattled cassowary)

Species: bennetti (dwarf cassowary)

 Quick Facts

Life span: 12 to 19 years in the wild, up to 40 years in zoos

Incubation period: 49 to 56 days

Number of eggs laid: 3 to 5

Age of maturity: 2½ to 3 years old

Size: Largest - southern cassowary, 4 to 5.6 feet (1.2 to 1.7 meters) tall, females usually larger than males

Size: Smallest - dwarf cassowary, 3.2 to 3.6 feet (1 to 1.1 meters) tall

Weight: Heaviest - southern cassowary, females up to 128 pounds ( 58 kilograms), males up to 75 pounds (34 kilograms)

Weight: Lightest - dwarf cassowary, up to 39 pounds (17.5 kilograms)

Size of egg: Up to 6.3 x 4.1 inches (16 x 10 centimeters)

Egg weight: About 20 ounces (580 grams)

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Camel:Ship of the Desert

Scientific Classification

Class: mammalia (Mammals)

Order: Cetartiodactyla

Family: Camelidae

Genus: Camelus

Species: bactrianus (Bactrian camel)

Species: dromedarius (dromedary camel)

Quick Facts

Life span: Median life expectancy is 17.8 years

Gestation: 12 to 14 months, depending on species

Number of young at birth: 1, rarely 2

Age of maturity: Females, 3 years; males, 5 to 7 years

Size: Bactrian - 10 to 11.5 feet (3.2 to 3.5 meters) long

Size: Dromedary - 7.2 to 11.2 feet (2.2 to 3.4 meters) long

Size: Bactrian - 5.2 to 5.9 feet (1.6 to 1.8 meters) tall at shoulder

Size: Dromedary – 5.9 to 6.6 feet (1.8 to 2 meters) tall at shoulder

Weight: Bactrian - 990 to 1,100 pounds (450 to 500 kilograms)

Weight: Dromedary – 880 to 1,320 (400 to 600 kilograms)

Weight at birth: Bactrian - 70 to 75 pounds (32 to 34 kilograms)

Weight at birth: Dromedary – 57 to 114 pounds (26 to 52 kilograms)

Fun Facts

• Camels store fat, not water, in their humps to tide them over on long walks through the desert when there is not much to eat.
• Camels have a natural pacing gait, moving both legs from the same side of the body at the same time.

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