This reminds me of how my box turtles used to torment our dog, Rags, by strolling around his doghouse and eating his dog food. There was nothing he could do but bark his head off, which didn’t impress the turtles at all. They were box turtles: if he tried to bite them, they could just seal up their shells. Poor Rags, he got quite exasperated.
Here we have a Greek tortoise and… well, a kitten. A kitten who is up for the confrontation. I wouldn’t want to be in that turtle’s shoes.