Rule 34 Dev - 2014 all_fours alpha_channel anus ass ass_up balls barefoot blush bondage bound canine collar cum cum_on_penis dalmatian drooling erection fasttrack37d feral hair hi_res human_to_feral knot leash male male_only mammal nipples nude orgasm pawpads paws penis plain_background saliva short_hair solo squint standing tail timtam tongue tongue_out transformation transparent_background vein veiny_penis|1747460184