It would depend on the type of carnivore that the living thing is. There are some carnivores that would be able to survive without eating too much meat. For example, there are some humans who would choose to be vegetarians, although it is quite common for people to like eating meat.
They may choose not to eat meat and get their nutrients elsewhere. But then, there is a classification called “obligate carnivores.” These are carnivores that would not be able to survive without eating meat. The nutrients that they need can only be acquired through the meat that they can get. They would starve to death if they did not eat meat.
No, Obligate carnivores cannot survive without meat. Carnivores are animals that eat meat. It will be impossible for them to survive without meat. Examples are wild cats. There are three types of carnivores. The hypocarnivores consume less than 30% of meat. This group of carnivores can survive with a non-animal diet for a while. Mesocarnivores require 50 to 70% of meat in their diet.
This group can survive as well, but it will be extremely difficult. Hypercarniovres require more than 70% of meat in the diet. This group cannot survive without meat for a long time. In summary, obligate carnivores need meat to stay alive. Other groups of carnivores can survive for a while without meat, but obligate carnivores cannot survive without meat.