FURVERT!

all_fours anthro anus back_muscles backsack balls barazoku big_butt black_body black_fur bodily_fluids breath bruskaroo butt butt_heart canid canine canis domestic_dog fur genitals in_heat inviting looking_back male male_anthro mammal mastiff molosser muscular muscular_male nipples nub_tail panting pecs penis presenting presenting_anus presenting_hindquarters rocky_(bruskaroo)rottweiler solo spread_legs spreading sweat tongue tongue_out