What Ultrasound Shows That X-Ray Cannot
X-ray and ultrasound are complementary tools. X-ray shows bones and gross size well but can't detect a pregnancy reliably until the skeleton calcifies, late in gestation. Ultrasound shows soft tissue directly and can detect a foetal heartbeat far earlier — giving a safe, real-time confirmation of pregnancy weeks before X-ray would show anything.
Pregnancy Ultrasound: What It Confirms
- Pregnancy confirmation — foetal heartbeats visible from 21–25 days post-breeding
- Puppy/kitten count — approximate litter size assessment
- Foetal viability — assessing foetal distress or death before whelping
🩺 Why confirm early: Early pregnancy confirmation lets you plan nutrition, prepare for whelping, and catch a non-viable pregnancy or false pregnancy early — rather than waiting weeks for physical signs to appear.
Frequently Asked Questions
Is ultrasound safe for pets?
Completely. Ultrasound uses sound waves — no radiation. It's safe for pregnant animals, foetuses, and can be repeated as many times as needed.
Does my pet need to be shaved for ultrasound?
A small area of fur is clipped for proper probe contact and image quality. The clip is minimal and grows back quickly.
Can you tell how many puppies my dog is carrying?
Yes — ultrasound confirms pregnancy from about 3 weeks post-breeding. Counting is approximate on ultrasound; X-ray at 45+ days gives a more accurate litter count.
My vet in another clinic said my dog has a heart murmur — what should I do?
We recommend consulting Dr. Pritesh who can examine your pet thoroughly and advise on the next steps, which may include referral for cardiac assessment if needed.