Many rabbits and guinea pigs dont seem to be bothered by fireworks. As prey animals, they will tend to hide and 'freeze' rather than become stressed and show signs of this.
However here is our advice for bonfire night/fireworks.
* Make sure you pack their cage with bedding so they have plenty of hiding places.
* If they live outdoors bring them inside or into a shed. If in a shed try to pack theri cage as much as possible. If you have any blankets cover the cag well to try to muffle the sound out as much as possible.
*If you have no choice but to leave them outside. Put the front of their cage facing a wall or fence. Pack over their cage with blankets to try to muffle out the noises.
*Block any windows if indoors and if outside cover the front of the cage so they dont see the flashes as often this scares more than the noise.
*Their is no medication which can be given for guinea pigs. There is some on the market for rabbits, but its efficency is questionable.
* if your pet has been affected by the fireworks, then it may show signs of differences in its behaviour ie be more withdrawn, aggressive or scared. This should settle with firm handling and gaining of trust again.