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  2. 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.

  3. Long Haired Dachshund's 'Phantom Pregnancy' Tugs at People's ...

    www.aol.com/long-haired-dachshunds-phantom...

    Depending on the breed, dogs go into heat 1-3 times per year. Purina explains why Mia may be so attached to her toy. Mild symptoms of mothering can usually be managed by removing toys she is ...

  4. Canine reproduction - Wikipedia

    en.wikipedia.org/wiki/Canine_reproduction

    During proestrus and estrus, females may have a clear, blood tinged, or bloody discharge. Dogs during these stages are often informally referred to as being in heat. The length of these cycles varies greatly among breeds and even between individuals of the same breed. Proestrus and estrus can last anywhere from 5 days to 21 days. [5] 3.

  5. Pyometra - Wikipedia

    en.wikipedia.org/wiki/Pyometra

    Pyometra is a result of hormonal and structural changes in the uterus lining. This can happen at any age, regardless of how many heat cycles have occurred or previous pregnancies (or lack thereof), although it becomes more common as the dog gets older. The main risk period for a female is for eight weeks after her peak standing heat has ended. [2]

  6. What to Do When Your Dog Is in Heat (Besides Freak Out ... - AOL

    www.aol.com/lifestyle/dog-heat-besides-freak...

    When your dog is in heat, you have two goals: keep her comfortable and prevent her from getting pregnant. Unless you are a licensed breeder who knows what’s up when it comes to caring for a ...

  7. Pseudopregnancy - Wikipedia

    en.wikipedia.org/wiki/Pseudopregnancy

    Pseudopregnancy is a normal physiologic process that occurs in female dogs. It is seen 45–60 days after a normal estrous (heat) period. After ovulation, progesterone levels rise. Pseudopregnancy happens when the progesterone levels begin to fall as decreasing progesterone leads to an increase of the hormone prolactin. Prolactin is responsible ...

  8. Dog breeding - Wikipedia

    en.wikipedia.org/wiki/Dog_breeding

    Dogs reach puberty between 6 and 24 months old, at which age female dogs will start having an estrous cycle. There are four stages of estrous: proestrus, estrus, diestrus, and anestrus. A dog in estrus, also known as being "in heat", can become pregnant during this 3- to 21-day period. [3]

  9. This Is What Happens to Your Brain When You Hang Out with ...

    www.aol.com/lifestyle/happens-brain-hang-dogs...

    Dog-Human Eye Contact May Increase Oxytocin There are several studies that have t. Denis Novikov/Getty Images There’s a reason nonprofits enlist dogs to help kids read, ease PTSD in veterans and ...