Cat

The domestic cat[1][2] (Felis catus[2] or Felis silvestris catus[4]) is a small, usually furry, domesticated, and carnivorous mammal. They are often called a housecat when kept as an indoor pet,[6] or simply a cat when there is no need to distinguish them from other felids and felines. Cats are often valued by humans for companionship, and their ability to hunt vermin and household pests. Cats are similar in anatomy to the other felids, with strong, flexible bodies, quick reflexes, sharp retractable claws, and teeth adapted to killing small prey. Cat senses fit a crepuscular and predatory ecological niche. Despite being solitary hunters, cats are a social species, and cat communication includes the use of a variety of vocalizations (mewing, purring, trilling, hissing, growling, and grunting), as well as cat pheromones, and types of cat-specific body language.[7] Cats have a high breeding rate. Nomenclature and etymology Taxonomy and evolution Main article: Cat evolution Genetics Anatomy

Collage of Six Cats-02 Toxoplasma gondii Toxoplasma gondii (tŏk'sə-plāz'mə gŏn'dē-ī') is an obligate, intracellular, parasitic protozoan that causes the disease toxoplasmosis.[1] Found worldwide, T. gondii is capable of infecting virtually all warm-blooded animals.[2] In humans, it is one of the most common parasites;[3] serological studies estimate that up to a third of the global population has been exposed to and may be chronically infected with T. gondii, although infection rates differ significantly from country to country.[4] Although mild, flu-like symptoms occasionally occur during the first few weeks following exposure, infection with T. gondii generally produces no symptoms in healthy human adults.[5][6] However, in infants, HIV/AIDS patients, and others with weakened immunity, infection can cause serious and occasionally fatal illness (toxoplasmosis).[5][6] Infection in humans and other warm-blooded animals can occur Dividing T. gondii parasites Diagram of T. gondii structure Lifecycle[edit] Lifecycle of T. gondii

Chat Un article de Wikipédia, l'encyclopédie libre. Essentiellement territorial, le chat est un prédateur de petites proies comme les rongeurs ou les oiseaux. Les chats ont diverses vocalisations dont les ronronnements, les miaulements, ou les grognements, bien qu’ils communiquent principalement par des positions faciales et corporelles et des phéromones. Tout d’abord vénéré par les Égyptiens, il fut diabolisé en Europe au Moyen Âge et ne retrouva ses lettres de noblesse qu’au XVIIIe siècle. Dénomination Le chat domestique mâle est couramment appelé un « chat » tandis que la femelle est appelée « chatte » et le jeune un « chaton ». Un chat mâle non castré est un « matou », terme à l’origine incertaine qui viendrait peut-être d’une dérivation de mite comme dans chattemite[5]. En argot, un chat s’appelle un « greffier »[7]. Anatomie Squelette et muscles Chat. Le squelette est composé de 250 os. Système digestif Anatomie des organes vitaux du chat. Pelage Sens Ouïe Vue Gros plan sur l’œil d’un chat. Goût