FURVERT!

2:3 abs absurd_res anthro big_bulge big_butt big_muscles big_pecs bird_dog bulge butt canid canine canis comic domestic_dog expansion genital_expansion genitals golden_retriever growth hi_res hunting_dog kogo male mammal multiple_scenes muscle_growth muscular muscular_male nipples pecs penis penis_expansion retriever solo vein veiny_penis