Yes, cats can eat lye bread, but you can't feed it in large quantities because lye bread doesn't contain many nutrients, which can cause cats to become malnourished.
To give your cat bread, avoid giving it with a large amount of salt, and it's best to give it plain bread. And the bread contains a certain amount of fiber, can promote the cat's intestinal peristalsis. Cats eat bread in moderation, can promote its intestinal peristalsis, is conducive to laxative, because the bread contains a certain amount of fiber, can play a role in regulating the cat's intestines.
What cats can't eat is the additives in the bread, such as garlic, onion, and a lot of salt.
If the cat after eating a large number of things containing these substances in the bread, a large amount of salt can easily lead to the cat's kidney stones, the heavy cause of kidney failure leading to the death of the cat. The salt contained in the bread that people eat is actually very large, for people may not notice, but cats have a sensitive sense of taste and can eat very little salt itself, so the amount of pasta fed must be small.
Garlic and onions are even more deadly agents for cats. Onions and garlic contain ingredients that will destroy red blood cells in the cat's body, which is directly fatal. The fermentation of sugars in bread can cause a cat to bloat and not want to eat, and in severe cases, go into shock.