extinction – n. when a plant or animal completely dies out and disappears
scale – n. a thin, hard plate of material that covers the bodies of some animals
veterinarian – n. a person who is trained to give medical care to animals
compromise – v. damaged or weakened
pitiful – adj. deserving or causing a feeling of pity or sympathy
intravenous – adj. through or into the veins
trend – n. the general direction of change
pose – v. to pretend to be something that you are not