Read the following context and answer the question.
Context: She drags me down the street until she gets to a spot she wants to smell then she abruptly stops and I stumble forward . This goes on until she has done number one and number two then we have a nice leisurely walk back to Denis ' with plenty of time for her to stop and smell the other dog 's pee . From what Denis mention Miyoko is more drill sergeant with Ivy there are lots of comands and heels and Ivy is a free spirit she does n't want to heel . Tonight I had Little Tony 's with Ipants ( Ira ) it was a post birthday dinner .
Question: Why is Ivy being yelled at so vigorously by Denis ?
Answer:


Ivy is difficult to train .