One feral male wolf and one anthro female protogen. The wolf's knot pops in and out of her with loud wet slaps, his hips driving frantic deep thrusts that grow slower and heavier as the knot swells fully inside her, locking them together as his cum floods her womb in thick white pulses, her body jolting with each hot spurt. Soft warm overhead light from a dim room. Wet squelching sounds, his low growl, her sharp gasp, [breathlessly] "yes, fill me." static camera, single continuous shot, one full frame, clothing unchanged, same art style, anatomy holds its shape throughout, limb count never changes, hands keep five separate fingers, no extra characters or limbs, stable face, motion continues to the last frame, sharp and clean, no distortion, no jitter, no background music, no watermark, subtitles or text, no censorship, clean loop.