jupitersterrain four

A canine pack animal who loves human companionship. 

Eats cats. Can take down large game. Doesn't sleep all day. Guards the house. Slobbers on the in-laws. Working animal. Easy to train. Happily greets you when you come home. Has good taste in furniture, particularly when eating said furniture

2.11, 13.11.12. urban 

Dogs perform many roles for people, such as hunting, herding, pulling loads, protection, assisting police and military,companionship, and, more recently, aiding handicapped individuals. This impact on human society has given them the nickname "Man's Best Friend" in the Western world. In some cultures, dogs are also a source of meat

While dog training as an organized activity can be traced back to the 18th century, in the last decades of the 20th century it became a high profile issue as many normal dog behaviors such as barking, jumping up, digging, rolling in dung, fighting, and urine marking^{[further explanation needed]} 

They have been bred for herding livestock, hunting (e.g. pointers and hounds), rodent control, guarding, helping fishermen with nets, detection dogs, and pulling loads

Some dogs owned by epileptics have been shown to alert their handler when the handler shows signs of an impending seizure

the dog has powerful muscles, fused wrist bones, a cardiovascular system that supports both sprinting and endurance, and teeth for catching and tearing

many dogs struggle to watch television

They have very large pupils, a high density of rods in the fovea, an increased flicker rate, and a tapetum lucid
Short-nosed breeds, on the other hand, have an "area centralis": a central patch with up to three times the density of nerve endings as the visual streak

Domestic dogs often display the remnants of countershading, a common natural camouflage pattern. Thus, many breeds will have an occasional "blaze", stripe, or "star" of white fur on their chest or underside. There are many different shapes for dog tails: straight, straight up, sickle, curled, or cork-screw. As with many canids, one of the primary functions of a dog's tail is to communicate their emotional state

1.47am, 13.11.12. Wiki