dog wiki:
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.
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footprint wiki:
[print is an impression left by a foot or shoe, for example an indentation in soft ground or snow, or a mark left by mud etc from the sole of the foot. Footprints can be useful in tracking the paths taken by people or animals in the recent past.In communications, a satellite's footprint is the area of the earth's surface from which its signals can be received.In computer science, the footprint of a piece of software is the portion of computing resources, typically RAM, CPU time and disc space, that it requires in order to operate.In product design, an item's footprint is the surface area it occupies. See also profile, form factor.Notions of a footprint as a sign of presence or a measure of size, influence or resource use have also been adopted in other fields. For example, in environmentalism a person's carbon footprint is a measure of the amount of natural resources they consume as part of their daily lives. See also ecological footprint.
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