I was just patting my Russian and picked him up and rubbed his arm... He quickly hid into his shell and made a weird noise like you were breathing in very quickly .. Is there something wrong he's never done that before ....
Russians arm
- Thread starter rocky1998
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That's a competely normal exhalation caused by pulling himself into his shell when he has been startled. Absolutely nothing to worry about.
That's a normal response to being frightened. We call it "hissing." It's an exhalation that serves to both make room inside the shell for the head and limbs, and to scare away potential predators, such as human beings! 
They can do it when not startled too. Joe's huff is used to express displeasure
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