The Horse Only Party is a party that you can go to in about every 1~4 hours. It is a party that only horses can come, hence the name, so basically it's a members only party too. The party takes place on a Red Barn, in a field with other farm-related things. It sort of resembles a Square Dance Party, with all it's cow-boyish decorations with lots of room to dance on, even the song resembles a square party.
Music
The music has a Square Dance-ish Theme, as said above. The beginning of the song seems to have horses clicking their hooves, and then it is followed by a train Whistle. It's called Train Tottin'.
Items
You can buy furniture items and clothing items in this party, like any other parties. Except that this is a horses only party, so all the clothings and furnitures are Cowboy/girl-themed. You can even buy the song, Train Trottin', upstairs when you click the old disc player.
Plushies
There is a Claw Machine with horse plushies. There are red, orange, yellow, green, blue violet, and black plushies. Some plushie horses are pink with a red strawberry on their heads, and some are white with a black top hat.
Games
It is possible to play the Jamaa Derby at the Horses Only Party.