CatAnimation.cs

// Set up Animations
var chain = new MarkovChain<string>(1);
chain.Add(new[] { "Sitting" }, "Sitting", 50);
chain.Add(new[] { "Sitting" }, "Grooming", 20);
chain.Add(new[] { "Sitting" }, "Sleeping", 20);
chain.Add(new[] { "Sitting" }, "Playing", 10);

chain.Add(new[] { "Playing" }, "Sitting", 100);

chain.Add(new[] { "Sleeping" }, "Sleeping", 60);
chain.Add(new[] { "Sleeping" }, "Sitting", 40);

chain.Add(new[] { "Grooming" }, "Grooming", 20);
chain.Add(new[] { "Grooming" }, "Sitting", 80);

// Set up Images
var framesPerState = new Dictionary<string, int>
{
    { "Sitting", 5 },
    { "Playing", 12 },
    { "Sleeping", 3 },
    { "Grooming", 8 },
};

var cancelSource = new CancellationTokenSource();
var cancel = cancelSource.Token;

// Allow for 1 minute, by default.
// You can change this to only cancel when the user requests, etc.
cancelSource.CancelAfter(TimeSpan.FromMinutes(1));

foreach (var state in chain.Chain(new[] { "Sitting" }))
{
    if (cancel.IsCancellationRequested)
    {
        break;
    }

    var frames = framesPerState[state];
    for (var i = 0; i < frames; i++)
    {
        Console.WriteLine($"Show Frame: {state}-{i}.png");
        // You can do this any number of ways, depending on your rendering platform.
    }

    Thread.Sleep(TimeSpan.FromSeconds(1.0 / 30));
}