I’m pretty sure, that both cow and calf are screaming when they are separated shortly after birth. Alnost like a mother and her baby have an emotional bond.
And even the smallest farm will absolutely kill them once they aren’t profitable anymore, or they’d have an ever increasing population of animals.
The spec is fairly complex. Someone ported Doom to PDF, for what it’s worth.
That doesn’t make PDF an inherently dangerous filetype, but I’d say it increases the likelihood of bugs/zero days within the PDF viewer.