Not sure where to begin? Equestria is a big, wide work of ponies, magic, and friendship. There are a lot of creatures that call Equestria your home. It's up to you to decide what you want to be and how to best integrate yourself in the world of ponies.
List of accepted species Earth Pony
Earth ponies make up most of Ponyville's population. While they can't fly or use magic like Pegasi and unicorn ponies, they have a deep connection with nature that makes them just as important. Pegasi
Pegasi typically live on Cloudsdale, but there is a good number of them living in Ponyville. Pagasi are characterized for their ability ot fly and manipulate clouds and are one of the three founding groups of Equestria. Unicorn Pony
Unicorn ponies are the third founding group of Equestria. They are characterized by their horn and ability to do magic. While magic is innate in unicorns, they need to learn to use their skill and many will spend their whole lives dedicated to learning magic. Zebra/Safari breeds
While the only known safari horse is Zecora (zebra), we can assume that other exotic equines can exist in the mlp universe. Giraffes, okapis, and antelopes could exist. We don't know much about these breeds other than they have a strong tribal connection to their homeland and very foreign ways of doing magic. Characters of this type are rare, so we will be a little pickier about them. Make sure to have a solid backstory as to why they are in Equestria. (: Donkey
Like earth ponies, donkeys have no magical abilities. They also don't appear to have cutie marks. Mule
Like earth ponies, mules have no magical abilities. They also don't appear to have cutie marks. Buffalo
Strong, earthy creatures, buffalo coexist with Ponyville with a treaty. They are very family oriented and resemble Native Americans in culture. Cattle
A domestic breed in Ponyville, cows are capable of speech and interaction with the ponies. Many cows live with Applejack's family at the ranch and occasionally will stampede into town (apologizing afterwards of course). Alicorn
Alicorns are a closed species, reserved only for positions of royalty. Dragon
Dragons are very rare around Ponyville, and when they do show up they can have a huge impact on town life. Dragons like to eat gems and can live for thousands of years. Like typical mythology, dragons hoard treasure and gems. Baby dragons are much more likely to peacefully exist in Equestria. Griffon
Griffons are not native to Equestria, they live across the ocean on a mass of clouds. However, it's not unheard of for Griffons to visit and make Equestria their home. With the head of an eagle and the body of a lion, they are great fliars withChangeling
They are the minions of Queen Chrysalis. They have a pony-like appearance along with insect features. They change their appearance to match that of ponies. They have sheer insect-like wings, fangs, horns used for magic, and holes in their legs.Changelings feed on Emotions.