Rule 34 Dev - 4_arms anthro anthrofied blush duo frown horn licking male multi_arm multi_limb muscular muscular_male simple_background tongue tongue_out white_background hickeybickeyboo avatar:_the_last_airbender nickelodeon appa_(avatar) momo_(avatar) bovid bovine mammal primate sky_bison winged_lemur monochrome sketch|9003236375