I found this post by @nv21089 today on adorable pairs. The photo reminds me of my late dog Giny and my cat Lilly. The loved to snuggle up to each other - and then of course be simultaneous petted by me.
Have you ever seen such a beautiful pair of bellies?
Purring does not always indicate that a cat is happy and healthy - some cats will purr loudly when they are terrified or in pain.
Service dogs are recognized in the U.S. as "necessary medical equipment."