Stick insects in captivity can die (apart from a natural death) for any number of reasons including temperature fluctuations, issues with moulting, a fungal infection, and contaminated food.

What causes stick insects to die?

If they are given leaves which have been sprayed with pesticide they may die. If their home is too low and small they may not be able to climb out of their skins. If stick insects are not given enough space they may fight with and eat other stick insects that are being kept with them.

How long do stick insects live for?

Once free of the old skin, the new skin will be soft and over a period of time will expand and harden Most females live for about 18 months, while the males are only short-lived, surviving for around 6-8 months.