(Animark) Because palpatation is not usually a practical option for smaller farm animals, an ultrasound is the best option available to determine pregnancy. It is ideal for miniature mares, donkeys, llamas, goats, sows, ewes and alpacas. The ultrasound instrument displays the exact location of density changes or tissue interfaces. When properly aimed at the uterus, the display will show a pattern or spike indicating pregnancy and no spike if the animal is open. Because the animal's uterus changes density soon after conception, you can identify pregnancy as early as 14 days after breeding. Fully portable, 2 year warranty.