Dogs are domesticated mammals of the Carnivora order. Descendants of wolves, dogs are the first animals to have been domesticated by humans—roughly 30,000 years ago. Dogs are bred for particular physical and emotional characteristics to assist humans with work and service tasks or to serve as companions, or pets. Dogs are differentiated as either purebred, or pedigree, with parents of the same breed, or as mixed-breeds, mutts, hybrids or mongrels with parents of multiple breeds. Dogs are often referred to as ‘man’s best friend’ referring to the high degree of loyalty that dogs share with humans.

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Dogs