Have you tried the suggestions mentioned in your Feb. thread? If you tried the squirt bottle like recommended, I really don't see why it hasn't worked? The foster girl I currently have has been able to sleep with our cat now, after using the squirt bottle method, training took less than a week. I trust her completely with our cat now, when at first there was no way I could leave the cat with her - she would have killed him then!
If you've seriously tried training and it's not working maybe the best thing is for you to rehome Riley.....you have to do what's best for your kitty and Riley. If you're going to rehome Riley, I would strongly suggest you consider surrendering him to a good, reputable rescue - unless you are prepared to spend hours checking references and doing home visits - I wouldn't rehome a dog any other way.
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