Our pets have many of the same needs that we have. They also have needs when it comes to their health and well being. It is up to us to help them in their preventive care, nutrition, exercise, illness, and first aid.
And remember cats are not dogs. Their systems, nutritional needs, and reactions to medicines are not the same as for dogs and treating a cat the same way you treat a dog could be disastrous.
Don't try to diagnose and treat your pet single-handedly. A vet has all the tools and knowledge that most of us are lacking. So keep your pet in their best health by getting the best information you can. The sooner your pet heals or gets the right care, the better everybody will feel!