Privet Darobat,

Perhaps rocks are too big to throw at dogs, but stones are a good size.

You say the dog droped the pies.
After a short vowel the constonant dubbles.
drop, dropped; hug, hugged; hat, hatter; hop, hopped.
The dog dropped the pies.

Yesterday I encountered a problem. I was walking it the park, when suddenly a dog stole my pies! The dog was vicious too. I wasn't able to get them from the dog! Suddenly, I had an idea. I picked up a rock, and threw it at the dog. The dog droped by pies and ran away. I was happy again.