These rabbit emojis on the other hand use slashes to make hanging straight down sort of ears.

Straight Down Ears
/(・ × ・)\/(^ x ^)\/(^ x ^=)\
/(=๏ x ๏=)\/(=´x`=)\/(=∵=)\
/(=⌒x⌒=)\/(=✪ x ✪=)\/(≡・ x ・≡)\
/(≧ x ≦)\/(v x v)\/(=∵=)\
/(≡・ x ・≡)\/ (,,๏ ⋏ ๏,,)\/(→ x ◕=)\
/(◕ x < )\/(◕ x ≦ )\/ (ㅇㅅㅇ❀)\
/ (•ㅅ•)\/ (´・×・`)\/ (,,Ő x Ő,,)\
/ (⁎˃ᆺ˂)\/ (´・×・`)\/ (╹ૅ×╹ૅ)\
/ ( ÒㅅÓ)\/ (⁎˃ᆺ˂)\/ ( ´•̥ו̥` )\