By Mayo Clinic Staff. An intravenous pyelogram (PIE-uh-low-gram), also called an excretory urogram, is an X-ray exam of your urinary tract. An intravenous pyelogram lets your doctor view your kidneys, your bladder and the tubes that carry urine from your kidneys to your bladder (ureters).
The silver, silver dapple, chocolate flax or Taffy gene. Silver, or silver dapple is the common term used for horses with a dilution gene that works to dilute black pigment. The gene usually causes a partial lightening of black pigment in the body coat and a more extreme lightening (or âsilveringâ) of the mane and tail.
Perfumes and lotions on human hands can cause horses to curl their upper lip. A stallion will make this face when he examines a mares urine to find out if she is in heat. The vomeronasal organ is orientated with the brain's sexual behavior center, and is used to decipher the pheromones a mare emits. Back to horse behaviors page.