Does anyone know how to get rid of the three-headed plants in Zoovania when it's nighttime? The hints say that three shrinking pills should take care of them, but what are shrinking pills and where do I get them?

Each
of the small plants on the ground will offer a shrinking pill when hit. Call
Bugs up and have him kick each plant, grab the pill inside, then toss it at
one of the three large plants. Once the first pill hits you have a limited
time to do the other two, so be quick about it. Once all three have been
shrunk you can safely run in, grab the boss token, and finish the level.