Fainting or near Fainting. Rapid Heartbeat â Tachycardia. When the heart beats too quickly (usually above 100 beats per minute), the lower chambers, or ventricles, do not have enough time to fill with blood, so they cannot effectively pump blood to the rest of the body.
If a horse has two copies of Gray, all offspring of this horse will be gray. Research indicates that horses with one copy of Gray often retain some of the original pigment while homozygotes tend to progress to almost completely white. Gray is found in many breeds and is the predominant color of the Lippizaner breed. Gray horses have a high incidence of dermal melanomas that are commonly seen around the tail and head. Over 70% of Gray horses older than 15 years will develop melanoma.
White is a color of a horse, not a breed. Certain breeds of horses can be 'white', but white is called 'grey' because white horses have gray skin if you look close. Albinos ar â¦ e also white but they are very rare and have 'pink' skin and blue eyes.onies are often thought to be baby horses, but they are actually breeds of horses that are much shorter-even when fully grown. There are about 267 breeds of horses, and several types of horses, such as cobs, polo ponies, ect.