Methods for training Norwegian Forest Cats to use cat litter:

1. Choose cat litter and litter boxes suitable for Norwegian Forest Cats. It is best to use odorless and unscented cat litter. It should be dusty. The litter box should be about twice as long as the cat's body. It should not be too small or too big.

2. Put the Norwegian forest cat's excrement into the cat litter box, so that when the cat wants to excrete, it will look for the smell and find a place to excrete.

3. Look for the Norwegian Forest Cat’s excretion patterns. When you see a Norwegian Forest Cat wanting to urinate, you can hold it into the litter box and wait until it has finished excreting before letting it out.

4. After the Norwegian forest cat has excreted, you can grab the cat’s front paws and dig around to bury the excrement.

5. After completing this series of actions, remember to reward the Norwegian Forest Cat with snacks to let it know that it is the right thing to do. If you persist like this for a while, it will learn to use cat litter.