Zebrows/Cowbas are fused symbiotic creatures living across the lands the of Equestira. 
Zebras and Cows use magic to became Zebrows/Cowbas, It’s led to a population of Zebrows/Cowbas.
 
Zerbows/Cowbas are the result of a Zebra and a Cow decide to become one(It’s kind like when a Slowpoke needs a Shellder to becomes a slowbro!)
 
 
Zebrows/Cowbas have existed since before alicorns first walked Equestira.
 
They are ancient ponies art of Zebrows/Cowbas and even in old stories told by zebras.
 
The story of How’s Zebrows/Cowbas came to be was.
 
There was a small tribe of zebras and a small village of cows.
 
They both faces the same 
enemies like Hydras,Chimeras and Manticores.
 
The Zebras came up with a plan with the cows, The pan was to merge themselves together.
 
While sharing the same body, They keep each other safe and keep a looking out for any of there’s enemies.
 
They are two kind of Zebrows/Cowbas, They are newly merger Zebrows/Cowbas and natural born Zebrows/Cowbas. 
There no difference between the two because natural born Zebrows/Cowbas are descended from newly merger Zebrows/Cowbas
 
Zebrows/Cowbas are so scarce these days. Years ago the land that had both Zebras and Cows in it split due to a natural disaster (or Discord). Zebra happended to be one the mainland and Zebras turned out to be on the land that split off. This resulted in Zebras winding up on a completely different land while Cows migrating in herds around the land at first looking for Zebras but through out generations Zebrows/Cowbas soon became stuff of legends.
 
They have lost the other half of them. But throughout time they gotten better. Even some used to this through out generations. Yet deep down they feel something missing even if they don’t it.
 
before the split Zebrow/Cowba formations work sorta like weddings do. Each pair is either well thought out like a relationship would or arranged amoung leaders.
 
But now a dormant instinct takes over and they fuse to any cow/zebra they can find.
 
A Zebrows are usually either both female or both male. And a baby zebrow is born from a male zebrow and a female zebrow. But on rare occasions there can be a male/female zebrow. That was usually save officials leaders of a tribe.
 
Zerbows/Cowbas are two species that become one new species( Pokémon logic)