You'd better use your own spell. Since it's you who will be doing the healing, you should also write the spell. Actually, a spell isn't even necessary; you can just transfer your energy (with healing intentions) to the animal.
Use a white candle.
It should be dressed and cleansed before each use.
This rids the candle of any accumulated negativity. I recommend rubbing them with an all cotton, white color, flannel fabric. Rub them in one direction only, as not to build any static charge that could affect the energy flow. After you cleanse your candle hold it and let your energy flow into as you bless it.
Light it and set it about 2 feet away from your cat.
Stroke your little one and in a very calm voice (almost a whisper)say.
"Raphael, with your healing touch
Bless this animal I love so much.
Angel of light, with beasts as your domain,
Remove the sickness, heal the pain".
Repeat as you feel your energy build. Continue stoking and
let the Energy flow from you into into your pet.
Do every day until you see results.
Animal as sensitive to energy, light, color, etc just like we are. Thus, depending on what it is you're trying to heal, you could look into color therapy, crystal healing ,etc. Animals have chakra's too and they can be healed emotionally, spiritually, etc just like any of us can. There are even acupuncturists that offer their services to animals. You could try looking to classes or courses on that, if you have the time and resources to do so.
If it's a serious injury or illness, you do need to take the animal to the vet, however.
I actually came across a few articles that you might be interested in as well. I've added the links below.
If your pet has a serious disease or injury, you would rely on "Magick"? Magick is not some supernatural force that can work against nature. If you didn't know, it's not like how Hollywood portrays it. Wounds won't just close up if you say a few words. Don't be so naive. You will know when your Pet's life is in danger or when they suffer serious damage, and going to an animal hospital and vet would be the smartest choice. Unless, of course, you'd see your pet die and wonder why your "spell" didn't work and save it's life.
You should be advised that animals have very different physioligies then we humans do so you must be aware of this anytime you do any kind of healing. Remember that some things that can help us can hurt them. If you are not a trained healer then I would agree with the above and take your animal friends to the vet where they can at least get proper medical care. And yes magick is not the answer for everything.
To be honest to calm them down you don't need any magick words. Your animals and you are already connected in a way that gives you all you need. You trust your cats and they trust you why else would you allow a sizable predator to share your home without a thought that it could attack and damage you at its whim. In the same way your cats trust that in a time of danger or stress they can rely on you to act as a cat would.
Firstly listen to your cat:
Your cat or any animal will let you know what it wants or needs even if it is just to be left alone. Cats give off signals all the time to how they feel and can become 'very' frustrated if you do not respond in kind. Physical contact is not always appreciated but cats like to be acknowledged. While you will not hear a little kitty voice in your head telling you 'Me like fish now' you will in time pick up in an empathic way the needs and wants of your cats. The more you understand your cats the more you will know what is stopping them from being calm as it will be the same thing that stops you from being calm.
Cat tips for two legs:
Cat greetings:
The head bop: Rubbing the side of your face along each others. For a cat this is a way of not only leaving their scent on you but detecting if you have greeted anyone else in the same way. Most cats will tolerate exchanging face for a hand, while to the cat this makes no sense they are happy to play along and rub the offered hand. To be offered not hand or face is rude.
Blinking:
Cats blink as a form of greeting, If a cat does not approach you for a head bob they will blink. Not returning this blink is at best 'rude' at worst aggressive. The act of closing eyes shows trust for no matter how long it is done. Your cat is telling you it trusts you enough not to attack that is happy to close its eyes around you. You should do your part and respond in kind a fixed look is telling your cat that either you don't trust it or you are uneasy about your surrounding and so should it be.
I'm not looking to use magic for the fun of it; I wanted to do more of an energy transfer/psychological healing, which I hope would also give me good practice. I'm not talking about healing physical wounds- of course I'd take my pet to the vet!