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.
Placental mammals are mammals that give birth to fully developed live young, such as like humans, for instance. They are classed within the group of animals known as eutherian â¦ s. Dogs, cats, livestock, rodents, giraffes, rhinoceroses, etc, are all placental mammals. seahorse isn't a placental mammal; it's a type of fish, genus hippocampus. Seahorses are part of the same order as pipefish, Syngnathiformes. The seahorse's head is shaped l â¦ ike that of a horse. Seahorse can, however, be another name for walrus, which is a placental mammal.