In my headcannon, Mrs Jumbo told Dumbo about Pink Elephants. ANd he enjoys them as on the 2019 version. And they be the elephant version of the fairies.
Also on my headcannon, some play pranks on Twylight, Pinkie, Applejack, and Rarity for how they hurt Rainbow with the Marer Do Well adn Walkign Dead pranks as well as how they use othjers including the CMC; and also Twyligth’s Novo gem theft and the cheerleader thing. And they’re also pals with Rainbow, Flurtershy, the CMC, Derp, and the Equestria Girls. And also the oens from Tarzan, Ice Age, Brother Bear, Lion King, Jungle Book, Raya and the Last Dragon, Lilo and Stitch, and more. So sweet.

I remember this. Those loveable rascals.
It was nice on the 2019 one when Dumbo enjoy them and bop his head.