Under normal circumstances, cats can brush their teeth when they are 4 months old. Cats are very sensitive and will be resistant to brushing. Before brushing their teeth, you can pet them more to keep them in a relaxed state. Then touch its mouth and teeth to let it adapt to this feeling, and then gently brush its teeth. If it resists, don't force it all the time. You should soothe its emotions in time and try to brush its teeth after it calms down. , praise it in time when it does not resist, and feed it some snacks as a reward after brushing its teeth, so that it will not be so afraid and resistant to brushing its teeth next time.
Precautions for brushing your cat’s teeth:
1. Brush your cat’s teeth in a quiet environment to avoid nervousness and resistance.
2. It is best to train the kitten to brush its teeth from the beginning, so that it can develop a habit so that it will no longer resist and the kitten will be easier to control.

3. Do not use human toothpaste on cats. You need to use pet toothpaste. Even if the cat eats it, it will not cause harm.