Is it normal for a 15-month-old Boxer to not have had her first heat?

Question

I have a 15 and a half month old boxer who has not yet had a heat cycle. She is UTD on all vaccines and hasn't had any health problems except a broken bone in her paw and an allergic reaction to an insect bite, we think (her face swelled in a few spots). Should I be worried that she hasn't had a heat cycle yet? Pet's info: Dog | Boxer | Female | unspayed | 1 year and 3 months old | 57 lbs

Jenny, DVM · Accepted Answer

There first hear cycle can often be missed and be a silent heat since the changes in their body are new. It is common to miss it. At her age a second should be approaching soon. The lager the dog, the later and farther between the cycles can be.

Is it normal for a 15-month-old Boxer to not have had her first heat?

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