The Fisher Price Loving Family dollhouse toys have had different styles of horses over the years.
This one I’m not absolutely sure as I haven’t found any in-package pictures, but I have found pictures of the same toy that are credited to a Loving Family home & stable playset.
1993 pony (see also Once Upon A Dream that used the same basic design with rooted hair):
2001 6″ tall pony:
2001 5″ tall foal:
Others:
Trophies:
Friendship Ponies Bubbles (Fisher-Price but not officially part of the Loving Family line I believe?)