Here's why:
* Individual variation: Dogs, like humans, have different body types and gestation periods can vary slightly.
* Other factors: The size of the teats isn't the only factor. The dog's overall weight gain, belly size, and other physical changes also play a role in determining how far along she is.
* Veterinary diagnosis: The most accurate way to determine pregnancy and its stage is through a veterinary exam, including an ultrasound or palpation.
What to do instead:
* Schedule a veterinary appointment: Your veterinarian can provide the most accurate assessment of your dog's pregnancy stage.
* Monitor for signs: While teats getting bigger is a sign, other things to look for include weight gain, changes in appetite, and nesting behavior.
Remember: It's essential to ensure your dog receives proper prenatal care from a veterinarian. This includes regular check-ups, vaccinations, and proper nutrition.