When do dogs usually go into heat for the first time, especially a young puppy?

I'm trying to understand when puppies typically go into heat for the first time. It would help to know the age range since my puppy is still quite young, only a few months old. Are there any signs I should be looking out for, or is there a usual age when this happens?

Embark Dog DNA Test

Recommended Product

Your dog's DNA could reveal hidden health risks.

Screen for 270+ genetic health risks and 350+ breeds. Veterinarian developed, research partner of Cornell University.

$199 USD
$139 USD
Save $60· Free US Shipping

Answer

Puppies typically enter their first heat cycle between six to twelve months of age, with variations depending on breed and size. It's understandable that you want to be prepared for this stage in your young pet's life.

  • First heat generally occurs between 6-12 months
  • Signs include increased urination and behavioral changes
  • Smaller breeds may experience heat earlier than larger breeds

The first heat cycle of a puppy, also known as estrus, can vary widely, often occurring between six to twelve months of age. Smaller breeds tend to go into heat earlier, while larger breeds might not enter estrus until they are over a year old. Signs to look out for include swelling of the vulva, a bloody discharge, increased urination, and changes in behavior, such as increased affectionate actions or restlessness. Paying attention to these signs will help you know when your dog might be entering her first heat.

Book a consultation with a licensed vet at Dial A Vet for just $49 AUD if you're unsure or symptoms are getting worse.

Frequently Asked Questions

  • How can I tell if my puppy is in heat?

    Look for signs such as a swollen vulva, a bloody discharge, increased urination, and changes in behavior.

  • Is it normal for the first heat to vary in timing?

    Yes, the timing of the first heat can vary greatly, depending on breed and individual puppy differences.

  • Should I take my puppy to the vet if she's in heat?

    If there are unusual symptoms or you have concerns, it’s always safest to consult your vet for advice and guidance.

Clinically Approved Standard by Dial A Vet Veterinary Team

Disclaimer: The customer and expert messages presented herein may have been altered with artificial intelligence or modified to enhance readability and safeguard the privacy of individuals. This content is for informational purposes only and is not a substitute for professional veterinary advice, diagnosis, or treatment. If your pet is experiencing a medical emergency, contact your local veterinarian or emergency animal hospital immediately. Talk to a vet now.

Next available appointment

Loading…