I'm loving all these pics. I love it when Wurp just randomly sticks his tongue out. One way to guarantee him doing it is to brush him, he just goes full blown derp when he is being brushed!
This is Lucky and his huge yawn. I couldn't find any great tongue pics but you can see it here. He used to bath himself and then when he'd pause temporarily because he got distracted, he'd still leave his tongue out. I have one whole pic of that that I can find, but it's not too noticeable. So yawn it is.