A class is a group or template definition of the methods and variables that describe an object. In other words, a class is a blueprint, containing the definition of the variables and the methods that are common to all instances of the class called objects.

Let's take a look at the following code example:

public class PetAnimal
{
    private readonly string PetName;
    private readonly PetColor PetColor;

    public PetAnimal(string petName, PetColor petColor)
    {
        PetName = petName;
        PetColor = petColor;
    }

    public string MyPet() => $"My pet is {PetName} and its color is {PetColor}.";
}

In the preceding code, we have a PetAnimal class that has two private fields called PetName and PetColor, and one method called MyPet().