Thundersnaps are a brand of Thunderian cookies. As per their tradition, the ThunderCats indulge in these delicious snacks at Cookie O'Clock, a special time that is decided by the Sword of Omens.
In The Legend of Boggy Ben, the ThunderCats are initially unable to eat the Thundersnaps cookies at Cookie O'Clock because Lion-O is unable to open the last jar of the biscuits. After an excursion into the Swamp of Boggy Ben, the feline heroes are eventually able to dine on these cookies, thanks to the Thundersnap Launcher that Panthro installed in the ThunderTank.