Here's Tubby yawning. Now you have to be quick to see this so ok....get ready.....his eyes are getting heavy...


There! Did you see it!

Too late....


I have the same problem as Sara. I sit and wait and wait and wait, then I'm either too early or too late. I think I've discovered the secret though. When they're sleeping, have the camera ready, then wake them up sufficiently so they lift their head. They should look at you for a second or two to ask why you woke them, then have a nice big yawn, then put their head back down. I've noticed this "head raise, yawn, head down" pattern a few times now, I just haven't had my camera handy for it yet - except for the one above which I completely missed.