The Big ImageBoard (TBIB) - abdominal bulge all fours anatomically correct anatomically correct genitalia anatomically correct penis animal genitalia animal penis anus balls balls deep big balls blue-wolfy blue eyes bodily fluids butt canid canine canine genitalia canine penis canis cheek tuft clitoris cock hanging collar cum cum in pussy cum in uterus cum inside detailed background digitigrade domestic dog duo erection eyebrows facial tuft female female penetrated feral feral on feral feral penetrated feral penetrating feral penetrating feral forest forest background genital fluids genitals green eyes half-closed eyes hindpaw holding leg holding thigh internal knot knot bulge knot hanging knotting leg markings legs above head looking at sex looking back looking pleasured male male/female male penetrating male penetrating female mammal markings muskydusky narrowed eyes nature nature background open mouth open smile outside pawpads paws penetration penile penile penetration penis penis in pussy penis shaped bulge plant plush (mushyplushy) reverse piledriver position sex shoulder stand side view smile smirk socks (marking) spread legs spreading tree tuft upside down uterus vaginal vaginal knotting vaginal penetration white eyebrows wolf