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A dog's glans consists of two sections: Behind the lower, long part (pars longa glandis) lies the "knot" (Bulbus glandis) [1] which expands only after penetrating the vagina and causes the male dog to remain inside the bitch ("Tie") for some time after ejaculation (typically between 15 and 30 min).
Dogs' vision is dichromatic; their visual world consists of yellows, blues, and grays. [39] They have difficulty differentiating between red and green, [40] and much like other mammals, the dog's eye is composed of two types of cone cells compared to the human's three. The divergence of the eye axis of dogs ranges from 12 to 25°, depending on ...
Native American dogs, or Pre-Columbian dogs, were dogs living with people indigenous to the Americas. Arriving about 10,000 years ago alongside Paleo-Indians , today they make up a fraction of dog breeds that range from the Alaskan Malamute to the Peruvian Hairless Dog .
On Oct. 2, 1950, "Peanuts" made its comic strip debut. Just two days later, Snoopy was introduced. Get to know the dog's breed and biography.
Image credits: Todd Whiteaker #2 Benji. A group of neighbors teamed up to save a giant dog who was dumped by his family into the streets. Despite his huge size, the dog looked scared and was ...
A study of dog remains indicates that these were selectively bred to be either as sled dogs or as hunting dogs, which implies that a sled dog standard and a hunting dog standard existed at that time. The optimal maximum size for a sled dog is 20–25 kg based on thermo-regulation, and the ancient sled dogs were between 16 and 25 kg.
This is a list of dogs from mythology, including dogs, beings who manifest themselves as dogs, beings whose anatomy includes dog parts, and so on. Wikimedia Commons has media related to Mythological dogs .
The Pug is a breed of dog with the physically distinctive features of a wrinkly, short-muzzled face, and curled tail. An ancient breed, with roots dating back to 400 B.C., [2] they have a fine, glossy coat that comes in a variety of colors, most often fawn (light brown) or black, and a compact, square body with well developed and thick muscles all over the body.