Hello, so yeah this blog is about what is everyone's favorite animation errors. Here are my top three.

Twilight Sparkle Magic kindergarten S2E3
This one is my top favorite because it is an alicorn error

Noteworthy animation error S1E26
This one comes close second because it looks ridiculously hilarious. (to me that is, lol)

Animation numbers error S02E26
And the one which comes third is still pretty unique. Look under Chrysalis's hair, slightly to the right of where she is, and you can see numbers.

Let me know yours in the comments!