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Fish

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Fish Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Around 99% of living fish species are ray-finned fish, belonging to the class Actinopterygii, with over 95% belonging to the teleost subgrouping. The earliest organisms that can be classified as fish were soft-bodied chordates that first appeared during the Cambrian period. Although they lacked a true spine, they possessed notochords which allowed them to be more agile than their invertebrate counterparts. Fish would continue to evolve through the Paleozoic era, diversifying into a wide variety of forms. Many fish of the Paleozoic developed external armor that protected them from predators. The first fish with jaws appeared in the Silurian period, after which many became formidable marine predators rather than just the prey of arthropods. Most fish are ectothermic, allo...
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Animal

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Animal Animals are multicellular, eukaryotic organisms withinside the organic state of Animalia. With few exceptions, animals eat natural cloth , breathe oxygen, are capable of flow , can reproduce sexually, and undergo an ontogenetic degree wherein their frame includes a hole sphere of cells, the blastula, all through embryonic improvement . Over 1. five million residing animal species had been described—of which around 1 million are insects— however, it's been predicted there are over 7 million animal species in total. Animals vary in duration from to. They have complicated interactions with every different and their environments, forming complicated meal webs. The medical examination of animals is called zoology. Most residing animal species are in Bilateria, a clade whose participants have a bilaterally symmetric frame plan. The Bilateria encompass the protostomes, containing invertebrates including nematodes, arthropods, and mollusks, and the...
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Bouledogue français

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Bouledogue français: un des meilleurs chiens pour la famille! Si vous avez déjà vu un bouledogue s’ébattre joyeusement avec des enfants ou se pelotonner près de son vieux maître, vous aurez du mal à croire qu’il y a seulement 150 ans, ses ancêtres étaient spécialisés en Angleterre dans les combats de taureaux, d’où son nom anglais de  Bulldog  ou chien-taureau. Le bouledogue britannique, plus robuste que celui-ci, était élevé pour sa combativité et son courage. Ses prouesses sanglantes contre les taureaux ravissaient les spectateurs. Quand les passementiers britanniques déménagèrent en France vers 1850, ils emmenèrent leurs bulldogs. Mélangés à d’autres races de chiens, ils devinrent plus petits et donnèrent le bouledogue français, plus docile. Cette bête musclée se révèle un chien d’agrément idéal pour toute la famille. Il a besoin qu’on l’aime et s’adapte parfaitement aux gens avec lesquels il vit. Les enfants aiment son énergie au jeu, tandis que les personnes âgées sont ré...
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