Painkiller used in cattle wiped out India's vultures, led to 500k human deaths

Why O Why would anyone give a painkiller to cattle.

I cannot imagine a cow saying the the farmer "Hey farmer I banged my hoof on a rock in the field and it sure does hurt, any chance of a pain killer"

Big Pharma selling another unwanted unnecessary drug.

The drug diclofenac is also prescribed to humans

I have noticed over the years how many veterinary drugs become human medications.

The drugs Pregabalin and pregalin were originally veterinary drugs.

Now they are prescribed for a plethora of psychiatric ailments in humans