Editing Turtle (section)

===Defense===
{{see also|Anti-predator adaptation}}
When sensing danger, a turtle may flee, freeze or withdraw into its shell. Freshwater turtles flee into the water, though the [[Sonora mud turtle]] may take refuge on land as the shallow temporary ponds they inhabit make them vulnerable.{{sfn|Orenstein|2012|pp=252–253}} When startled, a softshell turtle may dive underwater and bury itself under the sea floor.{{sfn|Franklin|2011|p=40}} If a predator persists, the turtle may bite or discharge from its cloaca. Several species produce foul-smelling chemicals from musk glands. Other tactics include threat displays and [[Bell's hinge-back tortoise]] can [[Apparent death|play dead]]. When attacked, big-headed turtle hatchlings squeal, possibly startling the predator.{{sfn|Orenstein|2012|pp=252–253, 301}}