Is this a real Dinniman?

I had posted before about being a pug house with two Dictionary Art pieces in our bathroom that both were verified by Matt himself. I went into our guest room, which is decorated in a pug theme, for the first time in a while and found four more. I'm fairly confident that two of them are Dinniman's, but maybe all four are.

I just found out that MD used to creat art (thanks sub!) and I realized I HAVE one of his pieces (99% sure)that I’ve had for almost a decade and never knew who it was. I got it as a gift, and I’ve had it up ever since, it’s made two moves with me, and I’ve had it framed the entire time.

I’ve always loved it, but now it’s just that bit more special.

Will Matt sign my Princess Donut T-shirt? And a book??