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A dog rolls on its back and rubs its shoulders on the ground to display contentment [1]: 199 Dogs are said to exhibit a left-right asymmetry of the tail when interacting with strangers, and will show the opposite right-left motion with people and dogs they know. [20]
Details of structures vary tremendously from breed to breed, more than in any other animal species, wild or domesticated, [1] as dogs are highly variable in height and weight. The smallest known adult dog was a Yorkshire Terrier that stood only 6.3 cm (2.5 in) at the shoulder, 9.5 cm (3.7 in) in length along the head and body, and weighed only ...
Attention to others can be assessed in dogs by measuring the amount of eye contact made with the trainer, as well as the position of the ears. [9] It has been found that dogs that make eye contact with the trainer, as well as display a forward ear position, are most successful in learning achievement during operant conditioning. [9]
Withers are the ridge between the shoulder blades of an animal, typically a quadruped. In many species, this ridge is the tallest point of the body. In horses and dogs, it is the standard place to measure the animal's height. In contrast, cattle are often measured to the top of the hips.
A blue female greyhound. Males are usually 71 to 76 centimetres (28 to 30 in) tall at the withers, and weigh on average 27 to 40 kilograms (60 to 88 lb).Females tend to be smaller, with shoulder heights ranging from 66 to 71 centimetres (26 to 28 in) and weights from 25 to 34 kilograms (55 to 75 lb), although weights can be above and below these average weights. [1]
The texture of the coat often depends on the distribution and the length of the two parts of a dog's coat, its thick, warm undercoat (or down) and its rougher, somewhat weather-resistant outer coat (topcoat, also referred to as guard hairs). Breeds with soft coats often have more or longer undercoat hairs than guard hairs; rough-textured coats ...
The team found large-sized breeds to have a 20% increased risk of shorter lifespan than small-sized breeds. Female dogs (12.7 years) were found to live longer than males (12.4 years), while pure ...
Distinctive features include eyes that are very clear, of yellowish or amber hue, hindquarters as high or a trifle higher than the shoulders, and a double-coat that tends to wave on shoulders, neck, back, and loins. The waterproof coat feels slightly oily and is often associated with a slight musky odor.