This may be a little off the topic of FIV but the subject of cats getting along with other animals made me remember something. A few years ago my son had an iguana. He lived in the basement in a really nice heated cage and the cats often sat on the edge of the old sofa down there and watched him through the glass.

One day I went down in the basement and somehow (we can't figure this out) the iguana had gotten out of his cage. He was walking across the basement floor and my rather large tabby, Trevor, was just sitting there mesmerized. Didn't law a paw on him.