For Preteens, Teens, and Adults. 1  Tdap is a tetanus, diphtheria, and pertussis vaccine given to preteens, teens, and adults as a one-time shot, or after exposure to tetanus under some circumstances. 2  Preteens and teens 11 through 18 years old (preferably at 11-12 years old) should receive a single dose of Tdap.
Centaurs are half-human, half-horse creatures in Greek mythology. They have the body of a horse and the torso, head and arms of a man. They were considered to be the children of Ixion, king of the Lapiths, and Nephele, a cloud made in the image of Hera.
Mules, on the other hand, are a cross between a female horse and a male donkey or âjackâ (hence the word âjackassâ). In contrast, a male horse and a female donkey bred together produces a âhinnyâ; the name coming from the fact that a female donkey is called a âjennyâ, bred with a h-orse.he offspring of this breeding is very similar to a mule, as you might expect, though generally slightly smaller, which is thought to be because of the smaller womb in a donkey over a horse. Donkey. So, the main difference between a donkey, mule, and a horse is genetics.