OCTOPUS :
The octopus (/ˈɒktəpəs/ or ~/pʊs/ ) is a soft-bodied, eight-armed mollusc of the orderOctopoda. Around 300 species are recognised and the order is grouped within the classCephalopoda with squids, cuttlefish and nautiloids. Like other cephalopods, the octopus is bilaterally symmetric with two eyes and a beak, with its mouth at the centre point of the arms (which are sometimes mistakenly called "tentacles"). The soft body can rapidly alter its shape, enabling octopuses to squeeze through small gaps. They trail their eight arms behind them as they swim. The siphon is used both for respiration and for locomotion, by expelling a jet of water. Octopuses have a complex nervous system and excellent sight, and are among the most intelligent and behaviourally diverse of all invertebratesScientific Classification:
Kingdom : Animalia
Phylum:Mollusca
Class:Cephalopoda
Subclass:Coleoidea
unranked):Neocoleoidea
Superorder:Octopodiformes
Order:Octopoda
Shark :
Sharks are a group of elasmobranch fishcharacterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head. Modern sharks are classified within the cladeSelachimorpha (or Selachii) and are the sister group to the rays. However, the term "shark" has also been used for extinct members of the subclass Elasmobranchii outside the Selachimorpha, such as Cladoselache and Xenacanthus, as well as other Chondrichthyessuch as the holocephalid eugenedontidans. Under this broader definition, the earliest known sharks date back to more than 420 million years ago.[1] Acanthodians are often referred to as "spiny sharks"; though they are not part of Chondrichthyes proper, they are a paraphyletic assemblage leading to cartilaginous fish as a whole.scientific classification
turtle:
Turtles are reptiles of the order Testudines (or Chelonii[3]) characterised by a special bony or cartilaginous shell developed from their ribsand acting as a shield.[4] "Turtle" may refer to the order as a whole (American English) or to fresh-water and sea-dwelling testudines (British English).scientific classification :
lion:
The lion (Panthera leo) is one of the big catsin the genus Panthera and a member of the family Felidae. The commonly used term African lion collectively denotes the several subspecies in Africa. With some males exceeding 250 kg (550 lb) in weight,[5] it is the second-largest living cat after the tiger, barring hybrids like the liger.[6][7] Wild lions currently exist in sub-Saharan Africa and in India (where an endangered remnant population resides in and around Gir Forest National Park). In ancient historic times, their range was in most of Africa, including North Africa, and across Eurasia from Greece and southeastern Europe to India. In the late Pleistocene, about 10,000 years ago, the lion was the most widespread large land mammal after humans: Panthera leo spelaea lived in northern and western Europe and Panthera leo atrox lived in the Americas from the Yukon to Peru.[8] The lion is classified as a vulnerable species by the International Union for Conservation of Nature (IUCN), having seen a major population decline in its African range of 30–50% over two decades during the second half of the twentieth century.[3] Lion populations are untenable outside designated reserves and national parks. Although the cause of the decline is not fully understood, habitat loss and conflicts with humans are the greatest causes of concern. Within Africa, the West African lion population is particularly endangered.
scientific classification :
tiger :
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