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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. Dog behavior - Wikipedia

    en.wikipedia.org/wiki/Dog_behavior

    Dogs reach sexual maturity and can reproduce during their first year, in contrast to wolves at two years-of-age. Female dogs have their first estrus ("heat") at 6 to 12 months-of-age; smaller dogs tend to come into heat earlier whereas larger dogs take longer to mature.

  4. Expert Trainer Explains Why Dogs Growl & How to Handle It - AOL

    www.aol.com/expert-trainer-explains-why-dogs...

    Oftentimes, when dogs undergo a surgery, there is one person who will take care of the dog, help the dog get up, take the dog out on leashed walks, provide mental enrichment, etc.

  5. Puppy - Wikipedia

    en.wikipedia.org/wiki/Puppy

    Puppies are not able to see as well as adult dogs. In addition, puppies' ears remain sealed until about thirteen to seventeen days after birth, after which they respond more actively to sounds. Between two and four weeks old, puppies usually begin to growl, bite, wag their tails, and bark. [10]

  6. 32 facts about puppies - AOL

    www.aol.com/32-facts-puppies-070052317.html

    Puppies should stay within their litter until they are at least eight weeks – and some experts recommend up to 12. Keeping puppies with their mom boosts their immune system, and makes them less ...

  7. How to Introduce Dogs: The Best Trainer-Approved Method - AOL

    www.aol.com/lifestyle/introduce-dogs-best...

    6. Positive Associations. If there are signs of tension, it may help to form some positive associations among the dogs. I like to place treats on the exchanged towels and feed treats when the dogs ...

  8. 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 ]

  9. Nursing Golden Retriever Puppies' Adorable Antics Leave ...

    www.aol.com/nursing-golden-retriever-puppies...

    "Most puppies are fully weaned to solid food between 7 and 10 weeks of age, although the transition can occur earlier." And, on average, puppies tend to need to stay with their mom up to 12 weeks ...