We're having the same problem. We have two cats (one indoor cat and one who goes outdoors). The indoor cat is very confident with Finnick and will stand her ground very well, our other cat just runs....which makes him excited and want to run after her.
We got some great advice from someone on here. We leash Finnick all the time he is around the cats, so that we can totally control his movements and so that he cannot chase the cats (under no circumstances let your puppy chase the cats), make sure you praise him every time he ignores or looks away from the cats and let the cats roam free around him and let them sniff him and also make sure to give them attention. If he doesn't already know the "Down" and "Stay" commands, then maybe work on them Whenever he is in the presence of the cats, make him stay in the "down" position.
Finnick is slowly getting there! He still wants to chase them (that's only natural) but I think in time of doing this method, they will be able to tolerate each other. I' just going to do this for however long it takes! I pull my hair out sometimes, but then he comes face to face with one of our cats and they both act perfectly (him on his leash still, just in case).
Hope that helps, I know it's a bit hard as you only visit the cats though.
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