Below are actual ultrasound videos as we see them. A short description follows each video
This is an ultrasound video of a 24 day pregnancy in a mature Holstein cow. Notice the small amount of fluid (appears black) in the lumen of the uterus.
This is an ultrasound video of twins at about 35 days gestation. Both embryos are visible, as well as heartbeats in each embryo. The shaking is an artifact caused by the operator.
This is a video of a 45 day pregnancy in a Boer goat. A linear probe was used to scan this doe, so the image quality is poor, yet it is diagnostic.
This 9 second videos shows triplets at about 34 days of gestation. All of the embryos were viable at the time this video was taken.
This is an ultrasound of a bull calf at about 65 days gestation. The male genital tubercle is evident immediately caudal to the umbilicus.
This is an ultrasound of a heifer calf at about 60 days gestation. Notice the highly echogenic (bright white) female genital tubercle immediately ventral to the base of the tail.
The scenario in this ultrasound video is rarely seen. There is one live and one dead twin. The dead twin is shown first and is only about 1/3 the size of the viable one shown later in the video. This cow went on to give birth to a live heifer calf about 8 months after this video was recorded.