I just posted this info a few days ago and it contains the same info I would give here!
I'll pull out a couple of links, however, to highlight them for this case.
You just got the dog so this would be a wise procedure to follow:
I just got a rescued dog – what do I do? | stickydogblog
You don't "know" this dog. I do this with all dogs I work with because "I" don't know them. :
Leerburg | Who Pets Your Puppy or Dog
Just the "walk" part is important you keep people out of his face and don't be tempted to try and trick him by having folks get to know him, by having them give him treats. That could end badly?? And no dog to dog meetings with unknow dogs. He only has to be comfortable with you and your family and "safe" around everyone else! And he does not need doggy friends to do that.
You will also need to keep a "drag leash" on the dog ( a short leash with the handle cut off) the dog drags it around the house.
In the link above you will find "Sit on the Dog" and "The Place Command" both extremely useful!
The above links also "happen" to have the "tools" you need to deal with the cat! The "Drag leash" and "The Place Command" I'll explain in a bit.
It happens to be the case that I do have cats! At the high point, I had up to 17 cats and 4 dogs living together. I used to be in cat rescue and yeah kinda kept a lot of them.
They shared a house and yard together and in 15 years of cats and dogs living together, I have "never" had a single Dog v Cat situation.
There is only one rule in dogs and cats living peacefully together...The Dog "NEVER CHASES,"the cats, period! There are "NO" negotiations, "NO" discussions!
And yeah no squirt bottle required!.
You need to make it "crystal clear" to the dog, that "cat chasing" will not be tolerated! All it should take is "one" swift hard correction and the point will be made! If he moves towards the cat you grab the drag leash and say "Down" once! If he doesn't Down you pull him sideways and downwards and repeat with a "Stay!" If he does not know those commands?? He will in short order!
The goal is the cats are not a subject of "investigation" or "curiousty" they are to be left alone. Now if the cat chooses to approach the dogs?? That's fine and if they "know" the dog is "under" control they will approach and sleep with and on and play with, or...maybe not, they are Cats, they do what they want. But the no is "not" allowed to approach the cat.
As it happens I have not had to do that hard correction myself. Even with my most hardcore dog (sigh) Rocky my GSD. High-Rank drive pack issues with my BullMastiff/APBT/Lab mix and Rocky starting fights. And then Human Aggression following that! But the Cats?? Nope, not a problem! He knew that was a "line" not to be crossed!!
Any of my dogs can do this:
They would not even realize they were doing anything?? And the rule applied with "any" cat. My dogs did not even "perceive" cats in the environment! Makes life on walks much easier!
So that's how I do the Dog/Cat thing. But there are the Leerburgh approach (he allows a bit more liberty than I do) and Joe Galaxy. Joe Galaxy is not my style, but I just pass info on and let folks decide how to proceed!
I'll get those up tomorrow. Cats seem to be the thing on the Boxerforum now also.