Dogs are domesticated members of the family Canidae. They are classified as a subspecies of Canis lupus, along with wolves and dingoes. Dogs were domesticated from wolves over 14,000 years ago by 展开

Dog behavior has been shaped by millennia of contact with humans. They have acquired the ability to understand and communicate with humans and are uniquely attuned to human behaviors. Behavioral scientists suggest that a set of social-cognitive abilities … 展开

The domesticated dog originated as a predator and scavenger. They inherited complex behaviors, such as bite inhibition, from their wolf ancestors, which would have been pack hunters with complex body language. These sophisticated forms of social cognition and … 展开

Size and skeleton
Dogs are extremely variable in size, ranging from one of the largest breeds, the Great Dane, at 50 to 79 kg (110 to 174 lb) and 71 to 81 cm (28 to 32 … 展开

Numerous disorders have been known to affect dogs. Some are congenital and others are acquired. Dogs can acquire upper respiratory tract … 展开

Population
The dog is the most widely abundant large carnivoran living in the human environment. In 2020, the estimated global dog population was … 展开

• Dog – the species (or subspecies) as a whole, also any male member of the same.
• Bitch – any female member of the species (or subspecies).
• Puppy or pup – a young member of the species (or subspecies) … 展开