A simple console sample

cat.cs

Console.Clear();
Console.CursorVisible = false;

var cat = new Cat();

while (true)
{
    cat.Erase();

    if (Console.KeyAvailable)
    {
        _ = Console.ReadKey(true).Key switch
        {
            ConsoleKey.LeftArrow => cat.MoveLeft(),
            ConsoleKey.UpArrow => cat.MoveUp(),
            ConsoleKey.RightArrow => cat.MoveRight(),
            ConsoleKey.DownArrow => cat.MoveDown(),
            _ => default,
        };
    }

    cat.Draw();

    System.Threading.Thread.Sleep(100);
}

public class Cat
{
    private int _x = 10;
    private int _y = 10;

    public int MoveUp() => --_y;
    public int MoveDown() => ++_y;
    public int MoveLeft() => --_x;
    public int MoveRight() => ++_x;

    public void Erase() => Write(" ", ConsoleColor.Black, ConsoleColor.Black);
    public void Draw() => Write("x", ConsoleColor.White, ConsoleColor.Black);

    private void Write(string text, ConsoleColor f, ConsoleColor b)
    {
        Console.ForegroundColor = f;
        Console.BackgroundColor = b;
        Console.SetCursorPosition(_x, _y);
        Console.Write(text);
        Console.ResetColor();
    }
}