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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.
Anatomical terminology. [edit on Wikidata] The bulbourethral glands or Cowper's glands (named for English anatomist William Cowper) are two small exocrine and accessory glands in the reproductive system of many male mammals. [1] They are homologous to Bartholin's glands in females. The bulbourethral glands are responsible for producing a pre ...
[35]: 140 The dog's visual system has evolved to aid in hunting. [28] Dogs have been shown to be able to discriminate between humans (e.g., identifying their human guardian) at a range of between 800 and 900 metres (2,600 and 3,000 ft); however, this range decreases to 500–600 metres (1,600–2,000 ft) if the object is stationary. [28]
The glans penis as the expansion of the corpus spongiosum. The glans penis is a body of spongy erectile tissue that is moulded on the rounded ends of the two corpora cavernosa penis, [ 9 ] extending farther on their upper than on their lower surfaces. It is the expanded cap of the corpus spongiosum, [ 10 ] a sponge-like region that surrounds ...
The main male sex organs are the penis and the scrotum, which contains the testicles that produce semen and sperm, which, as part of sexual intercourse, fertilize an ovum in the female's body; the fertilized ovum develops into a fetus, which is later born as an infant. The corresponding system in females is the female reproductive system.
The bulbus glandis (also called a bulb or knot) is an erectile tissue structure on the penis of canid mammals. [1][2][3][4][5][6] During mating, immediately before ejaculation the tissues swell up to lock (tie) the male's penis inside the female. The locking is completed by circular muscles just inside the female's vagina; this is called "the ...
The seven major dog groups in the U.S. are Herding, Hound, Non-Sporting, Sporting, Terrier, Toy and Working. Initially, when the AKC got its start in 1884, it tossed all dog breeds into either the ...
The human reproductive system usually involves internal fertilization by sexual intercourse. During this process, the male inserts their erect penis into the female 's vagina and ejaculates semen, which contains sperm. The sperm then travels through the vagina and cervix into the uterus or fallopian tubes for fertilization of the ovum.