BD Animals

Snakes are poikilothermous because both oxygen-rich blood and that lacking in oxygen get partially mixed up in the 3-chambered heart. Thus arteries carry mixed blood thereby supplying less energy to maintain a constant body temperature. The tongue tip is forked. This can be flicked in and out through a special opening of the jaw even when the mouth remains shut. On either sides of the upper jaw there is a Jacobson's Organ. When the tongue is drawn inside the mouth the tips automatically touch these organs that in turn receive chemical signal from them. It is very important for a snake to get all the information from the air and soil through the flicking of the tongue and the use of Jacobson's Organ. This supplements the hearing inability and poor eyesight 

King Cobra  

There are many unspecialized but backwardly directed teeth in each jaw of a snake. Only one or two pairs of these might be modified as poison fangs or well developed to hook fast moving prey. Both the jaws and body of snakes are exceptionally elastic. Snakes eat only live animals. However, Indian Egg-eater Elachistodon westermanni eats eggs. Depending upon their body size the land snakes eat toads and frogs, lizards and skinks, other snakes, small birds, rodents, hares, other small mammals, and fishes. Snakes swallow its prey whole. Common mode of killing a prey is coiling it followed by strangulation. Poisonous snakes might use venom to paralyze the prey. Snakes have an efficient digestive system that allows digestion of all parts of the prey. However, the egg-eater regurgitates the eggshells before swallowing the liquid egg-contents. Snakes rarely drink water. Most male snakes are provided with a pair of hemipenis and only one of it is used during copulation. Snakes live alone but the cobras live in pairs. Majority of the snakes lay eggs except for Vine or Whip Snake (lao doga/sutanali sap), Ahaetulla nasutus, several freshwater and estuarine snakes, sea snakes and vipers, which produce live babies either through ovo-viviparous or viviparous process.

Snake

There are about 90 species of snakes in Bangladesh, although over a dozen of these have not been reported during the last few decades. The common snakes of the country are Checkered Keelback (dhoda sap), Xenochsropis piscator; Striped Keelback (dora sap), Amphiesma stolata; Yellow-speckled Wolf Snake (ghorginni sap), Lycodon jara; Black-barred Kukri Snake (kukri sap), Oligodon cinereus; Olive Keelback (metey sap), Atretium schistosum; Copperhead (dudhraj sap), Elaphe radiata; Eastern Cat Snake (phanimonasa); Smooth Water Snake (paina/pani sap), Enhydris enhydris; rat snake (dhaman); Python (ajagar); cobra (gokhra) and sea snakes. Most snakes are non-poisonous and harmless to human being. Less than half a dozen land snakes are highly poisonous but they can be avoided without much trouble. By and large, snakes eat a huge quantity of live animals annually that are usually considered as pest on crops or as dangerous to human life. Tanned snake skins have very high market value while many live snakes are exported to Far Eastern countries as food. Several species of snakes are even worshipped by certain ethnic groups.

Non Poisonous Snake   

Non-poisonous snake' Snakes without any poison fang, venom apparatus, or poison glands. More than three fourth of Bangladesh's 90 species of snakes fall under this category. All snakes under family Typhlopidae, Boidae, and Acrochoridae are non-poisonous.

Tiger                

Tiger

Animal

The tiger is the largest cat species, reaching a total body length of up to 3.38 m over curves and weighing up to 388.7 kg in the wild. Wikipedia

Scientific name: Panthera tigris

Lifespan: 20 – 26 y (In captivity)

Speed: 49 – 65 km/h (Adult, In Short Bursts)

Lower classifications: Trinil tiger, Siberian Tiger, Caspian tiger, more

Mass: 1 kg on average (Bengal tiger, Newborn), more

Height: 90 – 110 cm (Bengal tiger, At Shoulder), 70 – 122 cm (Adult, At Shoulder)

Length: 240 – 265 cm (Bengal tiger, Female),

Two male Lion     

Females are the prime hunters and work together to prey. They do this by splitting into groups. One group chases the animals to a certain area whilst another group waits to ambush the victims. Their technique and skill is highly praised for its complexity and precision. Each lion begins to develop their own unique role that's specific to contributing to the success of killing the intended prey. Their diet consists of prey as large as elephants, hyenas, hippos, rhinos, etc to something as small as lizard and mice. A lot of the time their food is scavenged