Walk and talk
Many turtles need to move their legs or head to help them to talk. Vocalising in red-footed tortoises is often accompanied by head bobbing as they pump air through their throat. This is because they don't have a diaphragm, like humans, to help move their lungs.
Male or female?
One way to tell male and female red-footed tortoises apart is by their tail size. Male tortoises have a much bigger tail than females. They usually hold it to the side to keep it covered by the shell.
Red-footed tortoises can follow the gaze of other red-footed tortoises. This can be very useful when a predator is spotted, other tortoises in line of sight can tell where the threat is coming from.
Red-footed tortoises are known to sometimes eat sand. This could be to help them to break down the plants that make up most of their diet.
Red-footed tortoises are known for their brightly coloured legs and heads. Males tend to be more colourful than females. Interestingly these tortoises tend to prefer red and yellow colours over other colours like green and blue.