1. If your cat has bad breath due to frequently feeding it wet food with a fishy smell, you can try giving it breath fresheners, such as cat mouthwash, or brushing its teeth. This should help improve the situation.
2. Bad breath may be caused by oral diseases such as stomatitis. In this case, the owner can check whether the cat's gums are red or have oral ulcers, or even obvious tartar. In this case, it is necessary to consider feline viral stomatitis, and further investigation is needed to rule out herpesvirus, calicivirus, feline HIV, etc. After finding the cause, symptomatic treatment will be given. In severe cases of stomatitis, tooth extraction may also be necessary.
3. Bad breath may also be caused by a deficiency in B vitamins. Supplementing with pet-specific B vitamins can help.
4. If a cat eats too much canned cat food, freeze-dried food, or other treats, its breath will smell bad and it may also become overheated. Generally, feeding it bland food and giving it plenty of water will alleviate the bad breath. Overeating can also cause indigestion in cats, leading to bad breath, bloating, vomiting, and diarrhea. Giving it probiotics can help promote intestinal motility. 
Is it normal for kittens to have bad breath?
1. It's normal for cats to have some bad breath. This is because food residue gets stuck around the cat's gums, and over time, it will cause bad breath.
2. If your cat has severe bad breath and also drools excessively, you should pay attention, as it may be an oral disease.
3. During routine care and management, you can buy pet-specific toothbrushes and toothpaste to brush your cat's teeth.
4. Healthy cats' breath does not have an odor. However, the fishy smell that cats exhale after eating is normal, just like the smell of food after a human has eaten. Therefore, it is very important to make cats rinse their mouths after meals.
