Can we train carnivorous animals to become herbivorous?

No. For starters, carnivorous animals don't have a digestive system that's able to process vegetable matter efficiently, if at all. They cannot get the nutrition they need to survive on an herbivorous diet. read more

Yes, you can train individual carnivorous animals to become herbivores, as long as you make sure it has no access to meat. However, they will die. No matter how much they eat, they will starve, and die a slow, painful death. read more

There’s no particularly consistent set of criteria used for these simple divisions. Carnivores are animals that eat mostly (or exclusively) meat. Omnivores are animals that eat both meat and vegetation. Herbivores are animals that eat mostly (or exclusively) vegetation. Most animals are opportunistic. Deer will sometimes devour baby birds. read more

The"problem" is that both are examples of omnivorous animals, which by definition can eat both carnivorous and herbivorous diets! The question asked is whether a specialized carnivore can successfully survive as on an herbivorous diet, and vice versa, if a specialized herbivore can survive on a carnivorous diet. read more