Bella Sara Horses come in two sizes. The biggest and hardest to find are around the size of a Breyer Classic size horse. The smaller size is as tall as an old My Little Pony.
Although I am unable to show you pictures of all the posable horses here is a gallery of some:Lien
Ceratos and Ceranna
Flora and BluebellThey also sold 4 plush horses in the US that each came with special online codes, for Bella, Nike, Jewel, and Fiona. I believe Thunder and at least one other plush horse were sold in Europe.