7:4
animated
anthro
bat
digital_media_(artwork)
echidna
epilepsy_warning
eulipotyphlan
female
flash
group
hedgehog
humor
knuckles_the_echidna
male
mammal
monotreme
music
rouge_the_bat
sega
shadow_the_hedgehog
sonic_the_hedgehog
sonic_the_hedgehog_(series)
sound