OK. So we have been looking for a rescue dog for a while. Today I met one who is a great match. Tiny Jack Russel cross about 5kg. The foster carer brought him over to ours to see whether he was OK with our cat (large about 7kg). Dog was fine. Interested but not barking or anthing (he was kept on a lead). Our cat on the other hand hissed, growled and then when the dog walked away attacked him, causing him to bleed.
Does this mean no? Will the cat ever come round? Damn cat. He is very territorial and quite aggressive with other cats, but great with people.