C#

public string ToStirng()
        {
            return ("Name: " + getName()
                    +"\n"
                    +"Age: " + getAge()
                    +"\n"
                    +"Breed: " + getBreed()
                    +"\n"
                    +"Fur Color: " + getFurColor());
        }

public abstract class Animal
{
    public string Name { get; set; }
    public int Age { get; set; }
    public string Breed { get; set; }
    public string FurColor { get; set; }

    public Animal(string name, int age, string breed, string furColor)
    {
        Name = name;
        Age = age;
        Breed = breed;
        FurColor = furColor;
    }

    public abstract void Sound();

    public override string ToString()
    {
        return $"Name: {Name}\nAge: {Age}\nBreed: {Breed}\nFur Color: {FurColor}";
    }
}

public string ToStirng()
{
    return ("Name: " + getName()
            +"\n"
            +"Age: " + getAge()
            +"\n"
            +"Breed: " + getBreed()
            +"\n"
            +"Fur Color: " + getFurColor());
}

Member 14511008 wrote:

what do I build?

Member 14511008 wrote:

how do I design it?

Bastard Programmer from Hell
If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.

Console.WriteLine($"{name}, is {age} years of age and he works as a {occupation}.");

int age;
string ageInput;
do
    {
    Console.WriteLine("What is your age: ");
    ageInput = Console.ReadLine();
    } while (!int.TryParse(ageInput, out age));

do 
   {
...
   } while (condition);

do
    {
    Console.WriteLine("What is your age: ");
    ageInput = Console.ReadLine();
    } while (...);

            do
                {
...
                } while (!int.TryParse(ageInput, out age));

Console.WriteLine($"{name}, is {age} years of age and he works as a {occupation}.");
Console.WriteLine($"Next year, {name} will be {age + 1} years old.");

 Console.WriteLine($"{name}, is {age} years of age and he works as a {occupation}.");

//also use Console.ReadKey in order to view your program's response on the screen.
  Console.ReadKey();