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  2. Canine reproduction - Wikipedia

    en.wikipedia.org/wiki/Canine_reproduction

    Female dogs are at risk for endometritis and pyometra in the postpartum period and after estrus or vaginitis. Signs and symptoms include fever, lethargy, loss of appetite, excessive thirst, restlessness, a foul smelling vaginal discharge which may or may not be bloody, infertility, or they may be asymptomatic.

  3. Dog anatomy - Wikipedia

    en.wikipedia.org/wiki/Dog_anatomy

    [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]

  4. Euglena - Wikipedia

    en.wikipedia.org/wiki/Euglena

    Euglena is a genus of single cell flagellate eukaryotes. It is the best known and most widely studied member of the class Euglenoidea, a diverse group containing some 54 genera and at least 200 species. [1] [2] Species of Euglena are found in fresh water and salt water.

  5. A Comprehensive Guide to Navigating Your Dog’s Pregnancy - AOL

    www.aol.com/lifestyle/comprehensive-guide...

    When your pregnant dog is about to give birth, she will enter labor. For dogs, this occurs in three stages. First Stage: A pregnant dog’s uterus begins contracting and her cervix dilates. She ...

  6. Lepidoptera genitalia - Wikipedia

    en.wikipedia.org/wiki/Lepidoptera_genitalia

    The males of many species of Papilionoidea are furnished with secondary sexual characteristics. These consist of scent-producing organs, brushes, and brands or pouches of specialised scales. These presumably meet the function of convincing the female that she is mating with a male of the correct species. [6]

  7. Sex organ - Wikipedia

    en.wikipedia.org/wiki/Sex_organ

    The sex organs of the green algae Chara are the male antheridia (red) and female archegonia (brown) A sex organ, also known as a reproductive organ, is a part of an organism that is involved in sexual reproduction. Sex organs constitute the primary sex characteristics of an organism.

  8. The 7 Dog Breed Groups, Explained (So You Can Know Your ... - AOL

    www.aol.com/7-dog-breed-groups-explained...

    The World Canine Federation recognizes 350 unique dog breeds. In the U.S. The American Kennel Club now recognizes 209 breeds. That’s…a lot of dogs. To better understand each breed, humans have ...

  9. Estrous cycle - Wikipedia

    en.wikipedia.org/wiki/Estrous_cycle

    A female dog is usually diestrous (goes into heat typically twice per year), although some breeds typically have one or three cycles per year. The proestrus is relatively long at 5 to 9 days, while the estrus may last 4 to 13 days, with a diestrus of 60 days followed by about 90 to 150 days of anestrus.