I managed to lower the 'heat' by removing some of the ink. I dropped in some Pool, a very cool blue. It's a potent color so I tried not to over-do it. A shadow was created beneath the center cat for a horizontal element in an otherwise diagonal composition.
I made a few corrections and additions. The painting was much too 'hot', the red/orange too intense so I lifted some of the color between the cats in the foreground with a small amount of rubbing alcohol on a paper towel. I did this not only for esthetics but also to highlight the 'exchange' between these two animals. The little onlooker in the background is for composition sake. I guess this cat decided to hang back and watch the goings on.
Having my own cats and watching their behavior when another, strange cat approaches I think I've succeeded in recreating the posturing that takes place. Cats are very territorial and are slow to accept another cat on their turf. They're very selective when making new friends. The 'new' cat usually approaches cautiously with a curious, slightly submissive attitude if it's interested in joining the group. I've been witness to various outcomes of these exchanges...some good, some not so much.
I added this image to my Imagekind Gallery. It looks amazing on canvas so I hope you will stop by and check it out: http://www.imagekind.com/Making-Friends_art?IMID=b7ccce70-9ce3-4ff3-a237-6eefbd11deb4