Your use of either the General Depreciation System (GDS) or the Alternative Depreciation System (ADS) to depreciate property under MACRS determines what depreciation method and recovery period you use. You generally must use GDS unless you are specifically required by law to use ADS or you elect to use ADS.
The quetzal is a beautiful animal. Its scientific name is Pharomachrus mocino. Quetzals can be anywhere from 10-14 inches from bill to base of tail. The Quetzals are much larger than that though, because they have tails that may trail more than 3 feet behind their body.
1 A healthy axolotl can grow up to 15 inches (30cm) and can live for 20 years. So think carefully before getting an axolotl.  An axolotl is capable of regrowing limbs (and even organs!) and a loss of a limb or gill is not lethal as long as the injury is not too large.