One of my cats has been a sneaky devil and getting hold of medication bottles and GIVING them to the dog. I know a cat has to swat it on the floor in order for her to get it. I lost 4 bottles of medication this way (luckily we found all the pills each time, so no hospitalization was required).
I was laying down while my boyfriend was taking a bath then all of a sudden "ANGEL! Drop that!" She picked up an empty sleeping pills bottle and just walked off with it like she just caught a mouse. Then I had to get it from her.