FURVERT!

3_heads absurd_res accessory after_transformation anthro big_chest body_growth canid canid_demon canine canine_nose cerberus chalkboard classroom clenched_teeth clothing collar demon ears_up european_mythology eyewear facial_hair feral feral_transformation glasses goatee greek_mythology grimace group hellhound hi_res hornbuckle human_to_feral humanoid_face line_art looking_at_viewer looking_away looking_back looking_back_at_viewer male mammal markings medium_snout mid_transformation monochrome multi_head muscular muscular_male mythological_canine mythological_creature mythology necktie partial_transformation paws pointy_ears professor professor_scritch quadruped red_eyes school serious serious_face shocked short_snout showing_teeth sitting sitting_on_ground size_transformation sketch species_transformation studded_collar studs teacher teeth torn_clothing transformation trio wearing_glasses whisker_markings worried