Q:

When do puppies go into heat?

A:

Quick Answer

In unspayed dogs, the first estrus cycle, or heat, usually occurs between 6 and 24 months. In smaller breeds, the first estrus is often earlier than in larger breeds.

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Full Answer

A female dog's behavior changes markedly during estrus. She becomes more affectionate and may appear nervous or agitated. More frequent urination is also an indicator. A male dog is typically attracted to a female in estrus for approximately 18 days, but she is attracted for only half of this duration. When the female dog is fertile, her vaginal discharge changes from light red to straw-colored and decreases in volume.

To prevent estrus, a puppy can be spayed as early as 2 months.

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Related Questions

  • Q:

    Can a dog still go into heat after being spayed?

    A:

    Yes, it is possible for a dog to go into heat if she has been spayed. This is only true if the dog had her tubes tied versus having a whole ovariohysterectomy, which removes all of the female reproductive organs.

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  • Q:

    At what age do Labs go into heat?

    A:

    Female Labrador Retrievers go into their first heat between 6 and 24 months of age, which is the same age range that all dogs are given. The Labrador Retriever breed tends to be toward the latter end of this age range due to its larger size.

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  • Q:

    When do dogs go into heat?

    A:

    A dog that is not spayed first enters heat when she is between 6 months old and 24 months old. If she is spayed, she normally experiences heat twice a year. Smaller dog breeds typically experience heat earlier than larger breeds. Heat lasts about 18 days.

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  • Q:

    How often do female dogs go into heat?

    A:

    Unspayed female dogs tend to experience estrus, or go into heat, twice a year. Some breeds go into heat more often than others, and spayed dogs do not go into heat.

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