Do animals that eat other depend on plants?

Yes, all animals that eat other animals depend on plants. This is because all animals, including carnivores, ultimately get their energy from plants. Plants are the primary producers in the food chain, and they convert sunlight into energy that is stored in their tissues. When animals eat plants, they are consuming this stored energy. When carnivores eat other animals, they are consuming the energy that those animals obtained from eating plants. So, even though carnivores do not eat plants directly, they still depend on plants for their survival.