What are the signs that a female dog is entering heat?

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  1. When a female dog is entering heat (also called estrus), she goes through noticeable physical and behavioral changes. Here are the key signs to watch for:

    🔴 1. Swollen Vulva
    One of the earliest and most visible signs.

    The vulva becomes enlarged and puffy, often accompanied by increased licking of the area.

    🔴 2. Bloody Discharge
    A light to moderate bloody vaginal discharge typically begins within the first few days of heat.

    The color may start bright red and gradually lighten as the cycle progresses.

    🔴 3. Increased Urination
    She may urinate more frequently as a way to signal her fertility to male dogs.

    🔴 4. Behavioral Changes
    May become more affectionate or clingy, or sometimes the opposite—more aloof or irritable.

    Shows increased interest in male dogs, possibly even flagging (lifting her tail to the side).

    🔴 5. Attracting Male Dogs
    Male dogs may suddenly become very interested in her, even from a distance.

    She may begin to show receptive behavior, especially in the second half of the heat cycle.

    🔴 6. Tail Positioning (Flagging)
    She may move her tail to the side when touched near her back end, indicating she’s ready to mate.

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