Cats will not be poisoned if they eat geckos. Generally speaking, cats will not eat geckos, because geckos are difficult to catch, and geckos are not in the cat’s diet. If the cat accidentally eats geckos out of curiosity, it will not cause a poisoning reaction, because geckos themselves are non-toxic. However, because cats' gastrointestinal tracts are relatively fragile and they are picky about their diet, some cats' gastrointestinal tracts may not be adapted to the intake of abnormal food, and untreated geckos may contain certain bacteria that can cause cats to have abnormal reactions. It is recommended that cat owners pay close attention to the condition of their cats and seek medical attention promptly if their cats have any abnormal reactions.

What to do if a cat accidentally eats a gecko:

1. If the cat kills and eats the gecko during a fight, first pay attention to the amount the cat eats. If you eat less, you generally won't have much of a problem.

2. If the cat eats a lot of gecko meat and has obvious adverse reactions, you should take the cat to the doctor in time to check the cat’s condition.

3. Pay close attention to the cat's condition. If the cat takes the initiative to eat geckos because it is too hungry, the owner should reflect more and feed the cat in time to avoid such a situation happening again.