Guinness looks very happy. I'm glad you could find him such a loving and happy home. Does your friend live in the same city as you? If so, you can remain a part of his life and see him.
I have an outside cat that adopted us about 10 years ago and at that time she was already a grown cat. I've had Betty Boop for about 9 months now. Betty Boop and "Ramona" play like 2 dogs OR 2 cats....I'm not sure which one!!
I know, at times, Betty Boop can really pester Ramona, but so far, Ramona can take care of herself.
The picture of Guinness and the mini pinscher is absolutely one of the cutest pictures I've ever seen. Look at their tongues! Cute!! What a cute tongue picture for a Yorkie "tongue" contest!!