To Be A Cow - Part 3 (Patreon)

She collects herself enough to reflect on her situation and the oddity of having twice her usual amount of breasts. A tingling in her chest snaps her out of it however, and concern sets in as she feels a strange tugging on them. They actually begin to slide down her torso, as if pull by some unseen force, but more than that, the bright pink coloration of her nipples-turned-teats begins to spread across the surface of her breasts. As this happens, the cleavage between them begins to grow shallow as her four plump breasts begin to merge into a single organ. As it settles into its new, permanent location, she sees it for what it is: a large, pink cow udder.

~~~

Oof. The quadbreast -> udder transformation is such a rarity, but boy, do I love it.