What to do if your cat can't meow?
A cat's inability to meow might be due to internal heat; in this case, encourage the cat to drink more water and give it some fruit to help reduce the heat. It could also be that a fish or chicken bone is stuck in its throat, preventing it from meowing; in this case, remove the object promptly. If the inability to meow is due to a cold, administer cold and anti-inflammatory medication to relieve the symptoms. 
1. Caused by internal heat
If a cat has a sore throat due to internal heat, making it unable to meow, give it plenty of water and consider feeding it fruits such as apples and bananas to help reduce the heat and restore its health.
2. Foreign object stuck in throat
If you feed your cat fish, chicken, bones, or other foods haphazardly, and it accidentally gets a foreign object stuck in its throat, what should you do if your cat can't make a sound? You need to help remove the foreign object from its throat. If you can't do it yourself, it's best to take it to the vet for treatment.
3. Catching a cold
Cold weather and temperature fluctuations can cause cats to catch a cold, which can lead to symptoms such as bronchitis and make them unable to meow. It is necessary to give cats pet cold and anti-inflammatory drugs to relieve the symptoms of colds and bronchitis.