Yes. With a traditional or standard keto diet, you keep your carb intake low at all times. Many people get much of their fat and protein intake from meats. There is also a cyclical ketogenic diet, where people who do strenuous exercise consume extra carbohydrates just before their workouts. This can cause users to get out of ketosis, which is then restored on the non-carbohydrate days. Another variation is the targeted ketogenic diet where users also take carbs before working out, but only a limited amount, similar to a standard keto diet. It is also possible to design a vegan keto diet, where all the fats and proteins are plant-based.