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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).
For domestic dogs the tie may last up to half an hour or more, though usually less. [7] When male canines are sexually excited, the bulbus glandis may swell up inside the penile sheath, even if the dog has been neutered. [8] The bulbus glandis also occurs in the penises of some pinnipeds, including South American fur seals. [9]
The dog was dated to 14,223 years ago and was found buried along with a man and a woman, ... [30] [31] All healthy dogs, regardless of their size and type, ...
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In 2007, a study identified a gene that was proposed to be responsible for dog size. The study found a regulatory sequence next to the gene Insulin-like growth factor 1 (IGF1), which, together with the gene and regulatory sequence, "is a major contributor to body size in all small dogs." Two variants of this gene were found in large dogs ...
An athletic dog, the Komondor is fast and powerful and will leap at a predator to drive it off or knock it down. It can be used successfully to guard sheep against wolves or bears. It is a big, strong dog breed, armored with a thick coat. The coat provides protection against wild animals, weather and vegetation.
The dogs at the Great St Bernard Hospice were working dogs that were smaller than today's show St. Bernards. Originally about the size of a German Shepherd Dog, [15] the St. Bernard grew to the size of today's dog as kennel clubs and dog shows emphasized appearance over the dog's working ability, along with a closed stud book. [16]