Used to be, you could tell an alien pregnancy from a human one with your naked eye, back before they’d figured people out. Back when post-hysterectomy wombs ballooned overnight, or an entire nursing home of geriatrics would be expecting and everyone’s, like, expecting what exactly, and send in the troops. Your baby was born with a literal cow head? Fourteen stomachs? That doesn’t seem right. Stop counting its hoofs (heeves? hoofeses?) and call in the damn troops.

