Notes:

Since Megadog asked, who these Ponifications are, have a list :)

Row one:
Horses of the apocalypse (the way they eppear in Pratchett's Discworld Novels)
Kelpie (Brittish Mythology)
Steed (Saber Rider)

Row two:
Hippocampus (Greek Mythology)
Pegasus (Greek mythology)
Old Man/ Little Man (Pippi Longstocking)

Row Three:
Jolly Jumper (Lucky Luke)
Black Beauty (Balck Beauty [suprise])
Sleipnir (Nordic Mythology)
The last unicorn/ Amalthea (The last unicorn [another suprise])