Xantus's Hummingbird

 A medium-sized hummingbird found in Baja California, known for its vibrant green and red plumage

  X-ray Tetra

A small, transparent freshwater fish native to South America, often kept in aquariums.

  Xenarthra

 An order of placental mammals that includes armadillos, anteaters, and sloths.

 Xenopus

A genus of marine snails known as carrier shells, which attach pieces of shells, stones, and other objects to their own shells

Xenops

- A group of small birds found in the tropical forests of Central and South America.

 Xerus

A genus of ground squirrels native to Africa, known for their burrowing habits.

  Xoloitzcuintli

 Also known as the Mexican hairless dog, a breed that comes in three sizes and is known for its lack of fur.

 Xenophora

A genus of marine snails known as carrier shells, which attach pieces of shells, stones, and other objects to their own shells.

Xantus's Murrelet

A small seabird found off the coast of California and Mexico.

Xantus Leaf-toed Gecko

A species of gecko found in Baja California, known for its distinctive toe pads which allow it to cling to surfaces.