Disney Ducks

Disney Ducks, also known as the "Duck Universe", "Prime Duck Universe", "Duck Multiverse" and "Duck-Mouse Universe" is a branch of the Disney franchise that stars the adventures of Donald Duck, Scrooge McDuck, Huey, Dewey and Louie, Mickey Mouse and several other characters. The franchise is noteworthy especially for its long line of comic books and stories, which date back to the 1930s and still receive regular publications all around the world.

In recent years, they've had a number of connections with My Little Pony. Primarily in the DuckTales franchise

References to My Little Pony

 * In the episode, "The Missing Links of Moorshire!", two kelpies are introduced named Briar and Bramble, who resemble Pinkie Pie and Twilight Sparkle respectively. Likewise, they're voiced by Andrea Libman and Tara Strong, who voice Pinkie Pie and Twilight Sparkle in Friendship is Magic.
 * A season 2 episode of the 2017 DuckTales is titled "Friendship Hates Magic", a reference to Friendship is Magic

References to Disney Ducks

 * Huey, Dewey and Louie appear in as three students of Princess Celestia's School For Gifted Unicorns.

Other connections

 * There were several ads for Disney magazines in the original My Little Pony comic book series, which included stories such as "Dash it, Mickey".