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  2. Estrous cycle - Wikipedia

    en.wikipedia.org/wiki/Estrous_cycle

    Female dogs bleed during estrus, which usually lasts from 7–13 days, depending on the size and maturity of the dog. Ovulation occurs 24–48 hours after the luteinizing hormone peak, which occurs around the fourth day of estrus; therefore, this is the best time to begin breeding. Proestrus bleeding in dogs is common and is believed to be ...

  3. Constriction - Wikipedia

    en.wikipedia.org/wiki/Constriction

    The snake then wraps one or two loops around the prey, forming a constriction coil. The snake monitors the prey's heartbeat to ascertain it is dead. This can be a physically demanding and potentially dangerous procedure for the snake, because its metabolism is accelerated up to sevenfold and it becomes vulnerable to attack by another predator.

  4. Pyometra - Wikipedia

    en.wikipedia.org/wiki/Pyometra

    Though it is most commonly known as a disease of the unaltered female dog, it is also a notable human disease. It is also seen in female cattle, horses, goats, sheep, swine, cats, rabbits, hamsters, ferrets, rats and guinea pigs. Pyometra is an important disease to be aware of for any dog or cat owner because of the sudden nature of the disease ...

  5. Canine reproduction - Wikipedia

    en.wikipedia.org/wiki/Canine_reproduction

    In domestic dogs, sexual maturity occurs between the ages of 6 and 12 months for both males and females, although this can be delayed until up to two years of age for some large breeds. [2] Pregnancy is possible as soon as the first estrus cycle , but breeding is not recommended prior to the second cycle. [ 3 ]

  6. Human–canine bond - Wikipedia

    en.wikipedia.org/wiki/Human–canine_bond

    The human–canine bond is rooted in the domestication of the dog, which began occurring through their long-term association with hunter-gatherers more than 30,000–40,000 years ago. The earliest known relationship between dogs and humans is attested by the 1914 discovery of the Bonn–Oberkassel dog , who was buried alongside two humans in ...

  7. Study Finds Dogs Associate Words With Objects - AOL

    www.aol.com/lifestyle/study-finds-dogs-associate...

    The post Study Finds Dogs Associate Words With Objects appeared first on DogTime. A recent study has shed light on the cognitive abilities of dogs, demonstrating that they can associate specific ...

  8. Apical constriction - Wikipedia

    en.wikipedia.org/wiki/Apical_constriction

    Apical constriction mechanisms (red: filamentous actin. orange: myosin.) Apical constriction occurs primarily through the contraction of cytoskeletal elements. The specific mechanism depends on the species, the cell type, and the morphogenetic movement. Model organisms that have been studied include the frog Xenopus, and the fly Drosophila.

  9. New Study Says Dogs Understand More Words Than Humans Think - AOL

    www.aol.com/study-says-dogs-understand-more...

    Psychology Today explains that in the testing the scientists recruited dog owners whose dogs knew at least five object words. After the dog was made comfortable and fitted with external electrodes ...