New Year's Eve fireworks pose several risks for pets, including noise-induced stress and anxiety, which can lead to destructive behavior or attempts to escape. Loud noises can cause panic, resulting in injuries from running into objects or traffic. Additionally, fireworks contain toxic substances that can be harmful if ingested, leading to gastrointestinal issues or poisoning. The sudden flashes and explosions can also cause fear-induced seizures in susceptible pets. It's crucial to create a safe, quiet space for pets and ensure they're microchipped in case they run away.