Fastest animals
The fastest land animal is the cheetah, which has a recorded speed of . The peregrine falcon is the fastest bird and the fastest member of the animal kingdom with a diving speed of . The fastest animal in the sea is the black marlin, which has a recorded speed of .
Argentavis
The largest known flying creatures overall are not birds, but instead the azhdarchid pterosaurs of the Cretaceous. The wingspans of larger azhdarchids, such as "Quetzalcoatlus" and "Hatzegopteryx", have been estimated to exceed , with less conservative estimates being or more. Mass estimates for these azhdarchids are on the order of .