SpecialTimeBlog's video: Wild life animals fight to death CRAZIEST Animal Fights Caught Dog vs Cobra Snak HD Special time

Snakes are elongated, legless, carnivorous reptiles of the suborder Serpentes[2] that can be distinguished from legless lizards by their lack of eyelids and external ears. Like all squamates, snakes are ectothermic, amniote vertebrates covered in overlapping scales. Many species of snakes have skulls with several more joints than their lizard ancestors, enabling them to swallow prey much larger than their heads with their highly mobile jaws. To accommodate their narrow bodies, snakes' paired organs (such as kidneys) appear one in front of the other instead of side by side, and most have only one functional lung. Some species retain a pelvic girdle with a pair of vestigial claws on either side of the cloaca. Living snakes are found on every continent except Antarctica, and on most smaller land masses; exceptions include some large islands, such as Ireland, Iceland, Greenland and the islands of New Zealand, and many small islands of the Atlantic and central Pacific.[3] Additionally, sea snakes are widespread throughout the Indian and Pacific Oceans. More than 20 families are currently recognized, comprising about 500 genera and about 3,400 species.[4][5] They range in size from the tiny, 10.4 cm-long thread snake[6] to the reticulated python of 6.95 meters (22.8 ft) in length.[7] The fossil species Titanoboa cerrejonensis was 12.8 meters (42 ft) long.[8] Snakes are thought to have evolved from either burrowing or aquatic lizards, perhaps during the Jurassic period, with the earliest known fossils dating to between 143 and 167 Ma ago.[9] The diversity of modern snakes appeared during the Paleocene period (c 66 to 56 Ma ago). The oldest preserved descriptions of snakes can be found in the Brooklyn Papyrus. Most species are nonvenomous and those that have venom use it primarily to kill and subdue prey rather than for self-defense. Some possess venom potent enough to cause painful injury or death to humans. Nonvenomous snakes either swallow prey alive or kill by constriction.The domestic dog (Canis lupus familiaris or Canis familiaris)[3] is a domesticated canid which has been selectively bred for millennia for various behaviors, sensory capabilities, and physical attributes.[4] Although initially thought to have originated as an artificial variant of an extant canid species (variously supposed as being the dhole,[5] golden jackal,[6] or gray wolf[7]), extensive genetic studies undertaken during the 2010s indicate that dogs diverged from an extinct wolf-like canid in Eurasia 40,000 years ago.[8] Being the oldest domesticated animal, their long association with people has allowed dogs to be uniquely attuned to human behavior,[9] as well as thrive on a starch-rich diet which would be inadequate for other canid species.[10] Dogs perform many roles for people, such as hunting, herding, pulling loads, protection, assisting police and military, companionship and, more recently, aiding handicapped individuals. This impact on human society has given them the nickname "man's best friend" in the Western world. In China and South Vietnam dogs are a source of meat for humans.[11][12]