Just a thought I had cause if I remember correctly Fluffies have dog and cat genes and they clearly have more than two teats so what if a mare developed at least a second pair of them
The answer: Ridicule by the herd and possible harm to her and her offspring
Edit: The Smarty’s words were cut off, he said “Smawty gib munstah and munstah tummybebbehs biggest huwties!”