cute cartoon dog flying over sky with white and red hearts

all>Conservation status: Domesticated The dog is a canine mammal of the Order Carnivora that has been domesticated for at least 24,800 years and perhaps for as long as 150,000 years based on recent evidence. In this time, the dog has been developed into hundreds of breeds with a great degree of variation. For example, heights range from just a few inches (such as the Chihuahua) to nearly three feet (such as the Irish Wolfhound), and colors range from white to black with reds, grays, and browns also occurring in a tremendous variation of patterns. Dogs, like humans, are highly social animals and pack hunters; this similarity in their overall behavioral design accounts for their trainability, playfulness, and ability to fit into human households and social situations. Dogs fill a variety of roles in human society and are often trained as working dogs. For dogs that do not have traditional jobs, a wide range of dog sports provide the opportunity to exhibit their natural skills. In many countries, the most common and perhaps most important role of dogs is as companions. Dogs have lived with and worked with humans in so many roles that their loyalty has earned them the sobriquet "mans best friend." Conversely, some cultures consider dogs to be unclean. See more at Wikipedia.org...

>This article is about the insect. For other meanings, see Fly (disambiguation) As defined by entomologists, a fly (plural flies) is any species of insect of the order Diptera, some of which can land on food and transmit bacteria to humans. A few, like Ormia ochracea, have very advanced hearing organs. Flies are common amongst humans and have caused many diseases to spread in the past. The house-fly (Musca domestica) and mosquito are particularly common amongst humans. Other flies, such as the horse-fly (Family Tabanidae), can inflict painful bites. The larva of a fly is commonly called a maggot. See more at Wikipedia.org...

[ (Latin cor) is a hollow, muscular organ that pumps blood through the blood vessels by repeated, rhythmic contractions. The term cardiac means "related to the heart", from the Greek kardia (καρδια) for "heart". See more at Wikipedia.org...]