These came in 3 packs in a variety of colors and poses as part of the Magic of Pegasus line. They are approximately 3″ long. There are also fakie versions often found at dollar stores.
Laying down, facing left:
Laying down, facing right:
Rearing:
All 4 hooves on ground:
Raised front hoof:
In the early 2000’s, there were also Barbie mini horse 3-packs that the Magic of Pegasus minis replaced. These were slightly smaller, made of a softer plastic than the hard plastic pegasi.
