They yawn for sure. It is pretty cool seeing how far they can open their mouths. They will also wipe their eyes on occasion. If they keep doing it, there is probably something irritating their eye. A quick rinse under the sink in warm water usually helps.
thanks for the info guys.some of you may know i have a tort battling illness,i'm putting together a journal,of normal behaviour, compared too my experience with this sick tort,I believe you can not know if something is not working properly ,if you don't know how it works in the first place.thanx aqain for your help john