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Dog anatomy. Dog anatomy comprises the anatomical study of the visible parts of the body of a domestic dog. 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.
Female cycle. The average length of the reproductive cycle for females is 2–4 weeks. Females reach sexual maturity (puberty) between 8 and 18 months of age. There is a tremendous variability in the maturation age between breeds, and even within a breed of dog. [ 5] 1.
A female dog is nursing her newborn puppies. The female dog may produce colostrum 1–7 days before giving birth, lasting for around three months. [105] [106] Colostrum peak production was around 3 weeks postpartum and increased with litter size. [106] The dog can sometimes vomit and refuse food during child contractions. [107]
Vulva. In mammals, the vulva ( pl.: vulvas or vulvae) consists of the external female genitalia. For humans, it includes the mons pubis, labia majora, labia minora, clitoris, vestibule, urinary meatus, vaginal introitus, hymen, and openings of the vestibular glands. The vulva includes the entrance to the vagina, which leads to the uterus, and ...
Anal gland. The anal glands or anal sacs are small glands near the anus in many mammals. [1] They are situated in between the external anal sphincter muscle and internal anal sphincter muscle. [2] In non-human mammals, the secretions of the anal glands contain mostly volatile organic compounds with a strong odor, and they are thus functionally ...
Canidae ( / ˈkænɪdiː /; [ 3 ] from Latin, canis, " dog ") is a biological family of dog-like carnivorans, colloquially referred to as dogs, and constitutes a clade. A member of this family is also called a canid ( / ˈkeɪnɪd / ). [ 4 ] The family includes three subfamilies: the Caninae, and the extinct Borophaginae and Hesperocyoninae. [ 5 ]
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 spotted hyena ( Crocuta crocuta ), also known as the laughing hyena, [ 3] is a hyena species, currently classed as the sole extant member of the genus Crocuta, native to sub-Saharan Africa. It is listed as being of least concern by the IUCN due to its widespread range and large numbers estimated between 27,000 and 47,000 individuals. [ 1]