I don't know how, but she did. I could be in complete seclusion putting the pill in a chunk of cheese, then mixing it with other chunks of cheese. When I would put the chunks in front of her, she'd snorf down the unpolluted cheese and stare at the pill cheese. Then she'd pick it up in her teeth, lips pulled way back, and carry it under the deck and bury it. Then she'd look at me accusingly.