Ultrasound Systems for Animals

Ultrasound is the standard in-clinic method to confirm pregnancy and estimate litter size, typically reliable from around day 25-28 after breeding. Relaxin blood tests offer an earlier at-home option from day 26 post-fertilization. CanineP4 carries color Doppler ultrasound systems for animals along with relaxin rapid tests.

A micro-convex probe operating between 5.0 MHz and 8.0 MHz is recommended for canine pregnancy exams. Its compact footprint fits between the ribs and pelvic contours of medium to large female dogs, while providing the depth and resolution needed to visualize embryonic vesicles and fetal cardiac flutter. Linear probes can be used for superficial exams, but micro-convex probes offer the versatility needed for varied dog breeds.

Color Doppler ultrasound overlays blood flow velocity and direction onto B-mode grayscale images, allowing breeders and clinicians to confirm fetal heartbeat viability and examine uterine vascular perfusion. This capability helps distinguish viable gestational sacs from non-viable or resorbing embryos earlier in gestation. CanineP4 offers new and recertified color Doppler ultrasound systems with warranty protection.