The ears!
/r/corgi: Corgi Subreddit - Welsh corgi - a short-legged, long-backed dog with foxy head of either of two breeds of Welsh origin: Cardigan Welsh corgi or Pembroke Welsh corgi - November 17, 2017 - 14:32
Puppy running
/r/gifs: .gifs - funny, animated gifs for your viewing pleasure - Funny, animated GIFs: Your favorite computer file type! Officially pronounced with a hard "J" - November 16, 2017 - 14:22
/r/aww: A subreddit for cute and cuddly pictures - Things that make you go AWW! Like puppies, bunnies, babies, and so on... A place for really cute pictures and videos! - November 16, 2017 - 14:21