Something with breeding, depending upon how 'canon' you want to make things, there's variations of Fluffy Pony 'Mares'.
2 teats. Can lead to drama and trauma with more than 2 foals, but the Mare is also much less likely to be drained to the point of death by her smaller litter, and is able to better care for them all.
8 teats. Less chance of drama from the Foals, but a mother who is feeding that many Foals will be being drained to the point of death to produce milk for her hungry litter, and a scatter-brained critter like a Fluffy Pony + multiple equally scatter-brained Foals = shenanigans + tragedy.
Fluffsplosion. Tends to be a fairly divisive issue, overall. I've tried to follow the stories where Fluffy Mummas explode like soft little fragmentation grenades, but it never went down well. I like it as a 'Oh God No' scenario where the Dam is quite litterally pushed to the point of a mental breakdown, and the weirdness and funky pseudo-science that made Fluffy Ponies all comes unravelled. Foooomph!