By default, Xeros have long tails. Their tails can be a variety of shapes and sizes, such as a thick kangaroo-like tail, thin cat-like tails, fluffy fox-like tails, and more. So long as the tail appearance does not cross over with any of the other Tail Mutation requirements, Standard Tails can be nearly any other shape or size.
By default, all Xeros have ears that are located on the sides of their heads. These ears can be a variety of shapes and sizes, but are always folded in and narrowed at the base. Ears can be round, pointed, oval-shaped, and more. They can be many sizes, from small, rounded bear-like ears, to larger, pointed fox-like ears, to long rabbit-like ears. As long as it does not cross over with any other Ear Mutation requirements, Standard Ears can be nearly any other shape or size.
W̷̡̭̘͗͐́̆h̸̢͈̼̘̭͔̯̏̿ͅǎ̵̡̲̱͙̯̯̟̩̫̐̒͘̕ẗ̴̟͎́͂́̀̅͆͋͂̀͝ͅ ̸̱͖̮̈́̚ͅa̴̧̭̣̯̝̓̋̊͂̇͝r̸̢̠͈͕͂̎̓̍̃̇͘̚̚͠e̵͂̃́̾ͅ ̶̧̜̙̩͊̓͐͗́͐͊t̶̢̯͉̩͓̟͗́̈́h̸̢͑̓̊͂̀̈́̚͝͠ę̷͇̮̲̯̣̟̲̌͂̄̑̏́s̴̫̜̪͓͓̙̳̞͋͗͐̏̎̈̈̒͘e̷̜̜͚͍̹̬͇̽̀͆̿̕͝͠ ̴̨̻̈́̓̄͗̓̎̋͘ē̶̡̢̡͔̥̫̗͍̓̈́̀͂́ḁ̶̲͎̦͖̬͋̌͊̈́r̴̨̛͚̲̩͖̼͍͚͋̾͌̕ͅš̵̰̩̄̽̉͘͘?̵̠̌̊̔̔̀ ̵̫̮̱̙͂͆S̷̤̮̰̫̭̀̒̀̓̚ͅt̶̹̟̦̖͋̑͝ȉ̵̼̥̩̫̘̏̿̏̐l̶̛͙͇͍̤͊̅̈́͋̕͘̚͝l̷̡̛͖̹̜͓̬̗̂̏̍̀̿͘͜ ̸̧̭̗̝̟̱̪͇̜̈́̃̇̋̃̍͊̓b̶̨̀e̵̡̩͚̘͎͆̐͛̾͐̊̋̍̓͗ȉ̸̢͗̍̎̎̎ņ̸̲̰̟̬̜̘͇͚͒̆g̵͈̹̓̿̎̇͂̎̈̓̒̚ ̴̛͍͐̎̏̄̽̃͂̽͜r̴̤͓̼͈̻̹̈́e̷̢̊̓̔s̴̡̖̥͉͙̱̤̭̆̋̄̅̔̕̚̕e̴͈̳͎͂͐a̶͖̜̘͉͕̔̎̿̕̕r̴̟̘̺̫͒͆̋̃̂̃̕͠ͅc̶̛̱̰͎̬̯̦͎̠̿̆̊̐̓̚͝͠h̶̥͕̳́̏̑ë̶͉͉̙̻̝͚̮́̇̄͛̅͝͠d̸̛̰̱̹̝̱̰̠̔̈́́̔̒͠͝.̵̧̝͍̙̠̼̩̥͚̈͑̀̀̿͘ͅ.̶̣̮̗͎̯́̎̃͒̓.̶̤̾̓̈̒̅
Desert Xeros can have larger than average ears to radiate heat, this trait is known as Desert Ears. They can be any shape (pointy fennec-like, rounded jackrabbit-like, etc.) Size can vary a bit, but is generally about twice the height of the head.
Desert Xeros can have thick, fat tails like a gecko to store fat and water, this trait is known as a Desert Tail. Size and shape can vary, but think of a thick leopard gecko-like tail, or a big squishy tail reminiscent of a caterpillar or grub.
Xeros can have all sorts of tail shapes, but prehensile tails are quite rare. This type of tail acts as a fifth limb, allowing the Xero to hold on to other objects or aid in climbing. When not in use, they hold their tails coiled tightly in a spiral.
Some Xeros may have retractable claws; however this is a not a common adaptation. These claws are slightly more pointy than the standard Xero claws, but are otherwise exactly the same when not retracted inside. When not in use, they just show up as simple slits on the paws, sometimes hidden by the fur.
Marine Xeros can have fins of any sort on various parts of their bodies. Fins can include whale-like dorsal fins and flukes, shark or fish-like tails, or any other sort of webbed fin. Fins can be located on their backs, tails, backs of their limbs, or even in place of their ears.
Antennae are the most common trait displayed by Xeros. These sensitive feelers enhance a Xero's senses and help them navigate in difficult environments. The antennae can be many different shapes and lengths, and can be present on the head, back, tail, and other places, such as on the cheeks like 'whiskers', or on the back of the limbs. Antennae are soft and flexible.