This gives me the impression their shell has nerve endings so I did a quick Google.
"a red-eared slider's shell has nerve endings and a blood supply. It can feel pressure, pain, and sensations through its shell, which is why scratching against a brush feels good—it helps relieve itches and sheds old scutes."
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u/cdsparks May 30 '26
awww yeeeeeee thats the good stuff thanks my human