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Dogs have specialized whiskers known as vibrissae, sensing organs present above the dog's eyes, below their jaw, and on their muzzle. Vibrissae are more rigid, embedded much more deeply in the skin than other hairs, and have a greater number of receptor cells at their base. They can detect air currents, subtle vibrations, and objects in the dark.
A drawing by Konrad Lorenz showing facial expressions of a dog – a communication behavior. y-axis = fear, x-axis = aggression. Both humans and dogs are characterized by complex social lives with complex communication systems, but it is also possible that dogs, perhaps because of their reliance on humans for food, have evolved specialized skills for recognizing and interpreting human social ...
Dogs have vastly more powerful noses than humans. The typical dog's nose is 100,000 to 1 million times as sensitive as a human's, and the most sensitive breed, the bloodhound, has a sense of smell which is can be up to 100 million times as sensitive. Additionally, dogs have much larger olfactory mucosa and a larger part of the brain dedicated ...
Yes, it’s normal for dogs to bare their teeth when they smile. The bigger problem is that people often misinterpret a toothy smile as aggression and become scared, Haug says. “They may respond ...
Mainly it is the body's outer skin. The integumentary system includes skin, hair, scales, feathers, hooves, claws, and nails. It has a variety of additional functions: it may serve to maintain water balance, protect the deeper tissues, excrete wastes, and regulate body temperature, and is the attachment site for sensory receptors which detect ...
The health of dogs is a well studied area in veterinary medicine. Dog health is viewed holistically; it encompasses many different aspects, including disease processes, genetics, and nutritional health, for example. Infectious diseases that affect dogs are important not only from a veterinary standpoint, but also because of the risk to public ...
Larger dogs would be breeds such as Great Danes and St. Bernards. She says, "The average lifespan for a small breed dog would be around 13 to 16 years, although many live longer. On the other hand ...
The dog (Canis familiaris or Canis lupus familiaris) is a domesticated descendant of the wolf. Also called the domestic dog, it was selectively bred from an extinct population of wolves during the Late Pleistocene by hunter-gatherers. The dog was the first species to be domesticated by humans, over 14,000 years ago and before the development of ...