Your suggestions to get puppy to stop chasing the cat!

[Mary-E]

I need help here….most of the time Rocket is tethered to me and its not an issue. But anytime he is off the leash he harrases my cat. He nips at her and I think he is just playing, but I don't think she is enjoying the company.

[Dexter Doodle]

I have a ragamuffin cat. They are sweet as can be, but are indoor only because the breed is known never to fight back. This was a big problem with Dexter. He doesn't have any aggression issues, but would constantly chase and knock my cat down. It is difficult because any startling like shaking a can would also startle my cat. My trainer taught me how to use the e collar with Dexter. I know they are so controversial, but Dexter has so much more freedom and our communication has improved tremendously. He interacts with my cat now but has learned to move slowly and keep four on the floor and not to nip him.

Trust me, I was so hesitant of the ecollar. I wore it first and only use it on a level that I can't even feel. It is merely an attention getter from a distance. The vibrate mode is upsetting to him so I don't use it. I'm not telling anyone else that this is what they should do, but I am going to say that it changed my relationship with Dexter for the better.

[Susan & Randy's Kate]

When my sister Kay and I  were young we would wrestle.  We were having a great time and not getting hurt.  It was the one thing that drove my mom crazy and we would get in trouble.  Now I have two dogs that don't seem to hurt each other but sounds horrible.  It is hard to break them up sometimes.  I throw a toy their way to distract them.  Love the cloth duck.  Oh, sometimes shaking a can works.

[Diane, Hurley and Sidney]

We had two cats when we brought Hurley into our lives. From the start we taught him 'no cat'. Getting to his behaving came with training him the 'Place' command. We started with just a few minutes 3 times per day gradually increasing the time based on how he responded to each increase. For example, if it seemed he could not make it 15 minutes then I did not increase the time until he responded to the 15 minutes.

His place is his doggie bed. We keep it in the same spot, never moving it. When he teases the cat or behaves and doesn't mind he is told PLACE as I point to his doggie bed. He can play on his doggie bed. He can move around on it but he is not allowed to come off if it until I release him. It took a couple of weeks to get him to understand he cannot come off until I release him but over that time frame we built up to his staying on his doggie bed up to an hour.
I never trained him with treats or the clicker.
I attached one of the cutest pictures, to me anyway, of Hurley's interpretation of PLACE one time that half a butt was ok. I made him get completely on his doggie bed after I took the picture. First I had to tiurn away so he would. It see me laughing.

[Rosemary (Ro) and Enzo]

We have Ragdoll cats.  They are also indoors only.  One is a huge male, who put the fear into Enzo early on.  One well placed swat on the nose, and she knows she had better not mess with him.  She now out weighs him by 40 lbs., but she still stays clears of him.  The other 2 are females...one she has no interest in at all, the other is her best buddy.  She mouths her and even picks her up.  Drives me crazy...but the cat continually comes back for more. The cat will spend upwards of 20 minutes just kneading on poor Enzo.  But Enzo lies still for it.

  We did teach " No Cat" early on...as she was never permitted to give chase.  I would leash her if I thought things were getting out of hand.  She quickly learned what was and what was not acceptable.

   Your cat may or may not actually get use to the idea of the dog being around.  They are all different.

[Michele Kiss]

Our cat is 8 years old and very grumpy. Sometimes they look *almost* playful but I don't like the idea that bringing this "annoying new puppy" in to the house stresses her out. So we use "leave it" to stop him chasing / playing with her, and will physically separate them (different rooms) if need be. They seem to peacefully co-exist for the most part. He's definitely a little scared of her and she's not afraid to take a swipe at him. I just don't want things getting out of hand so we do separate them if need be.

Oh to add on... we NEVER leave them together and unattended. When we go out, Fenway (our doodle) is confined to our top floor with gates to keep Bella (the cat) out and vice versa. 

So basically, we use "leave it" and physical separation if he's chasing the cat and we're around to stop it, and we use physical separation to make sure it doesn't happen when we're gone.