Desert tortes either try's to defend itself by going after the person to bite them or either tucks there head in there shells to make themselves look like a rock.
different turtles react differently
humans!
Scientists, can know exactly to how they react.
Turtles (reptiles) are close to humans and frogs (amphibians) http://abacus.gene.ucl.ac.uk/will/files/TreeOfLife.pdf
humans
Turtles usually do not interact with humans, as they are wild animals that prefer to keep their distance. In some cases, turtles may approach humans in search of food. It is important to remember to never feed wild turtles, as it can disrupt their natural diet and behavior.
Turtles have been around longer than most species on the Earth. They live for a long time, and are likely to be older than a human when found.
Because humans scare us.
Some turtles can bite humans - I think a big snapping turtle might be able to cut your finger off. However, turtles do not prey on humans for food.
humans are killing them
give it stimuli to react to.
Bottlenose dolphins a quite friendly to humans they are curious around us. Hope this helps.