Years of the Elephant

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Kohler-Rollefson, I. U. (12 April 1991). " Camelus dromedarius" (PDF). Mammalian Species (375): 1–8. doi: 10.2307/3504297. JSTOR 3504297. Archived from the original (PDF) on 21 May 2013. Johnston, S.D.; Smith, B.; Pyne, M.; Stenzel, D.; Holt, W.V. (2007). "One-Sided Ejaculation of Echidna Sperm Bundles ( Tachyglossus aculeatus)" (PDF). Am. Nat. 170 (6): E162–4. doi: 10.1086/522847. PMID 18171162. S2CID 40632746. Online Etymology Dictionary". Etymonline.com. Archived from the original on 2011-06-06 . Retrieved 2011-05-28.

Austin, Colin Russell; Short, Roger Valentine (21 March 1985). Reproduction in Mammals: Volume 4, Reproductive Fitness. Cambridge University Press. ISBN 978-0-521-31984-3 . Retrieved 22 July 2013. In males, the expulsion of urine from the body is done through the penis. The urethra drains the bladder through the prostate gland, where it is joined by the ejaculatory duct, and then onward to the penis. Renfree, Marilyn; Hugh Tyndale-Biscoe (1987-01-30). Reproductive Physiology of Marsupials. Cambridge University Press. ISBN 9780521337922. Archived from the original on 11 January 2014 . Retrieved 5 May 2013. To the editor: I appreciate your editorial, but I am again left to wonder if there is real leadership on the L.A. City Council.Jay Houston (2008-07-07). Ultimate Elk Hunting: Strategies, Techniques & Methods. Cool Springs Press. ISBN 9781616732813. Archived from the original on 2013-05-11 . Retrieved 2013-02-10.

Some features of the accessory glands in the male genital region vary among oryzomyines. In Transandinomys talamancae, [97] a single pair of preputial glands is present at the penis. As is usual for sigmodontines, there are two pairs of ventral prostate glands and a single pair of anterior and dorsal prostate glands. Part of the end of the vesicular gland is irregularly folded, not smooth as in most oryzomyines. [98] Nomadic Peoples. Commission on Nomadic Peoples. 1992. Archived from the original on 26 March 2014 . Retrieved 11 June 2013. The term penis applies to many intromittent organs, but not to all. As an example, the intromittent organ of most Cephalopoda is the hectocotylus, a specialized arm, and male spiders use their pedipalps. Even within the Vertebrata, there are morphological variants with specific terminology, such as hemipenes. The penile morphology of some types of strepsirrhine primates has provided information about their taxonomy. [107] Male galago species possess very distinctive penile morphology that can be used to classify species. [108] [109] [110] Struhsaker, Thomas T (1967). Behavior of elk (Cervus canadensis) during the rut . Retrieved 2013-11-08.Leave Billy at the L.A. Zoo as an ambassador for campaigns to end wild elephant poaching, a role in which he can do a lot of good. It is custodian of one of the world’s most important scientific collections comprising over 80 million specimens. The scale of this collection enables researchers from all over the world to document how species have and continue to respond to environmental changes - which is vital in helping predict what might happen in the future and informing future policies and plans England, Gary (15 April 2008). Fertility and Obstetrics in the Horse. John Wiley & Sons. ISBN 978-0-470-75041-4 . Retrieved 18 February 2014. Most marsupials, except for the two largest species of kangaroos and marsupial moles [120] (assuming the latter are true marsupials), have a bifurcated penis, separated into two columns, so that the penis has two ends corresponding to the females' two vaginas. [121] Monotremes

Susan Long (2006). Veterinary Genetics and Reproductive Physiology. Churchill Livingstone Elsevier. ISBN 978-0-7506-8877-2. Archived from the original on 2014-03-26 . Retrieved 2013-11-08. Dixson, Alan F. (26 January 2012). Primate Sexuality: Comparative Studies of the Prosimians, Monkeys, Apes, and Humans. Oxford University Press. ISBN 978-0-19-150342-9. Archived from the original on 31 December 2013 . Retrieved 6 September 2013.

Origin

As with any other bodily attribute, the length and girth of the penis can be highly variable between mammals of different species. [16] [17] In many mammals, the size of a flaccid penis is smaller than its erect size. Bed bugs are famous for their aggressive, stabbing sex. Sometimes, overzealous males kill females with their saber-like penis in the process. Macdonald, D.W., ed. (2009). The Princeton Encyclopedia of Mammals. Princeton University Press. ISBN 978-0-691-14069-8. In Thomasomys ucucha, the glans penis is rounded, short, and small and is superficially divided into left and right halves by a trough at the top and a ridge at the bottom. [100] Bryan had his first international recognition when he and Puma settled a contract for using his single “All Out” for its Olympics commercial campaign in 2004.

John A. Byers (30 June 2009). Built for Speed: A Year in the Life of Pronghorn. Harvard University Press. ISBN 978-0-674-02913-2. Archived from the original on 1 January 2014 . Retrieved 15 July 2013. In giant anteaters, the (retracted) penis and testes are located internally between the rectum and urinary bladder. [136]Walker, Donald F.; Vaughan, John T. (1 June 1980). Bovine and equine urogenital surgery. Lea & Febiger. ISBN 978-0-8121-0284-0 . Retrieved 23 July 2013. In 2010, entomologist Charles Linehard described Neotrogla, a new genus of barkflies. Species of this genus have sex-reversed genitalia. Females have penis-like organs called gynosomes that are inserted into vagina-like openings of males during mating. [142] In 2014, a detailed study of the insects reproductive habits led by Kazunori Yoshizawae confirmed that the organ functions similar to a penis – for example, it swells during sexual intercourse – and is used to extract sperm from the male. [143] [144] Mollusks In male insects, the structure analogous to a penis is known as aedeagus. The male copulatory organ of various lower invertebrate animals is often called the cirrus. [141] Szykman, M.; Van Horn, R. C.; Engh, A.L. Boydston; Holekamp, K. E. (2007). "Courtship and mating in free-living spotted hyenas" (PDF). Behaviour. 144 (7): 815–846. CiteSeerX 10.1.1.630.5755. doi: 10.1163/156853907781476418. Archived (PDF) from the original on 2012-11-30.