I would home him with a cat but ONLY someone who knows and is willing to put in the training.
He doesn't sound like he wants to hurt the cat he is just young and exited.
He hasn't lived with one for so long it would be unfair to just say after a few days he doesn't like them it can take ages to train.

Dave has started getting more silly with the cats mostly he just looks at them but if they go past he has to chase them but if I tell him to leave he does.

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